aeration

[Newbie Bill]

I have a small 200 gph pump (very low power usage) submerged in my pond for
additional aeration - just as added 'insurance'. The output is below the
water so the water is just 'bubbling' like a natural spring might. I do not
want it splashing for several reasons. I have been told it is the breaking
of the surface which helps to oxidize the water.
Questions: 1) Is this actually doing me some good. 2)Aesthetics aside would
an airstone attached be significantly better.
Thanxx
Bill Brister - Austin, Texas

[Tom L. La Bron]

Bill,

If you are worried about "aesthetics" and airstone
pumping air into your water from the bottom of your
pond would probably be a better idea, especially as the
summer is coming on and higher pond temps, especially
in Austin, Texas. The airstone in the depths of your
pond would allow a lot more "air" to come in contact
with the water than just moving it up and and across
the surface using the pump.

Tom L.L.
----------------------------------------------

Newbie Bill wrote:
> I have a small 200 gph pump (very low power usage) submerged in my pond for
> additional aeration - just as added 'insurance'. The output is below the
> water so the water is just 'bubbling' like a natural spring might. I do not
> want it splashing for several reasons. I have been told it is the breaking
> of the surface which helps to oxidize the water.
> Questions: 1) Is this actually doing me some good. 2)Aesthetics aside would
> an airstone attached be significantly better.
> Thanxx
> Bill Brister - Austin, Texas
>
>

[George]

"Tom L. La Bron" > wrote in message
...
> Bill,
>
> If you are worried about "aesthetics" and airstone pumping air into your water
> from the bottom of your pond would probably be a better idea, especially as
> the summer is coming on and higher pond temps, especially in Austin, Texas.
> The airstone in the depths of your pond would allow a lot more "air" to come
> in contact with the water than just moving it up and and across the surface
> using the pump.
>
> Tom L.L.
> ----------------------------------------------
>
> Newbie Bill wrote:
>> I have a small 200 gph pump (very low power usage) submerged in my pond for
>> additional aeration - just as added 'insurance'. The output is below the
>> water so the water is just 'bubbling' like a natural spring might. I do not
>> want it splashing for several reasons. I have been told it is the breaking
>> of the surface which helps to oxidize the water.
>> Questions: 1) Is this actually doing me some good. 2)Aesthetics aside would
>> an airstone attached be significantly better.
>> Thanxx
>> Bill Brister - Austin, Texas
>>

Actually, the air water interface is at least as important, if not more
important. The larger the surface area of the air/water interface, the greater
the exchange of gases. While an airstone can pump air through the water, it
does so in a limited way, since it is only making contact with a small area of
water at a time and only influences the immediate area around the airstone. By
inducing a current across the surface of the water with a pump located at the
bottom of the pond, you will induce more gas exchange because of the greater
surface area involved. It also helps in preventing zonation from froming in the
water column, since you are pumping the water from the bottom and streaming it
across the surface, which in turn, allows oxygenated water to move towards the
bottom of the pond. The ripples going across the surface of the pond also looks
nice.

[Grubber]

"Newbie Bill" > wrote in message
m...
> I have a small 200 gph pump (very low power usage) submerged in my pond
for
> additional aeration - just as added 'insurance'. The output is below the
> water so the water is just 'bubbling' like a natural spring might. I do
not
> want it splashing for several reasons. I have been told it is the
breaking
> of the surface which helps to oxidize the water.
> Questions: 1) Is this actually doing me some good. 2)Aesthetics aside
would
> an airstone attached be significantly better.
> Thanxx
> Bill Brister - Austin, Texas
>
>

Try making a venturi out of pvc. This will give you the circulation benefit
of the pump with more aeration than an airstone. You can also make it for a
couple of bucks, so it's cheap to try.

Basically, your pump output goes into a piece of horizontal 1/2" pvc a
couple of feet long. Cut the pvc in half and add a T with the opening
pointing straight up. Get another piece of pvc long enough to fit in the T
and stick a couple inches out of the water. Cut one end at a 45 degree
angle and shave the pvc so it will fit past the stop in the T. It needs to
get down into the T and get into the flow coming from the pump, with the
open angle away from the pump. The water flow sucks air in from the upright
pvc and bubbles out of the lower pipe.

Here's a possibly better explanation, with a different method. With a small
pump, I'd stick with 1/2" pvc and shaving the pvc may be easier than finding
tubing that will fit inside the 1/2" pvc.

http://spaghoops.com/pond/venturi.htm

I'm also in Austin btw. My fish love playing in the bubbles, although I've
got a 1600 gph pump on the venturi which gives them a pretty good current to
play in.

[Newbie Bill]

Let me try this again. Thanxx to all who have answered so far. All of your
suggestions are helpful but they may raise more questions than they answer.
Let me revert to 'pump layout 101' questions.
My pond is around 800 gallons. It is shaped like a snowman with a smaller
'circle' on top (about 5 ft wide) of a larger one (about 6 1/2 ft). There is
very little 'indentation'/restriction between the two circles. The top has
an irregular buttom (has a platform in it as the original owner had designed
it as mostly a spitter pond) but it is only about 18" deep in the small end
and 25" in the larger end. It is a little over 9 feet long. Accordingly it
does has a high surface to volume ratio, which I assume helps a little bit
in gas exchange. I have a 1600 gal Laguna pump(full open) running from the
deeper end to my filter which comes back in over a small shelf of two flat
rocks stacked on each other, in the shallow end. This does create minimal
splashing, some ripples and bubbles. The small pump in question is in the
middle of the larger circle. Surprising to me, the bubbling/rolling from
the 200 gph pump actually produces stronger ripples than the 'splash' end
(floating food is pushed towards the 'waterfall'). I have a bunch of water
lilies around the edge of the deep end which is why I am trying to avoid
splashing with the little pump. Even a very small bell fountain effect was
splashing the leaves and making visibility poor. It wont be long before the
water rolling from the small pump is pretty much the only open surface on
the deep end. I have about 8 submerged anarchis.
Everything is running well right now but I am particularly concerned about
it being so shallow and my first ponding hot Texas summer coming on. It
gets full afternoon sun. I have more flow from my big pump than I need. I
was planning to build a 'sink filter' as filter #2 and divert some flow to
it, as my fish load is very high. Naturally I am not getting a full 1600
gph due to elevation loss, but I think it would be adequate for both. Water
parameters are perfect right now, but they are growing right.
Now, as a result of your valuable input I am unsure how to proceed. I
would very much appreciate your educated guesses. I could divert the large
pump and try the venturi idea, and add new pump and filter as/if required
later. (Trying to avoid higher electricity usage when possible.) Your
input has now started me to consider zonation which I assume is
stratification(just read a bit about this). Perhaps? I should divert the
large pump for additional airation and just us the small to move lower water
some. I hadn't thought it through but to put in an airstone I would need
(even if small) an external pump that sucks air and not water right. I am a
bit concerned about moving the small pump much deeper since it has no
prefilter, just small slits in the case, which seem to plug up within 2-4
weeks just from algae growth, much less pulling sediment. The fountain tube
attached (I didnt mention before) put the bottom of the pump about a foot
deep and exiting about an inch from the water surface. I suspect if I lower
it much more there will be very little rolling water on the surface. I am
also wondering if I should be diverting from the large pump directly into
the pond just for water movement. or. or. or. Probably there are other
permutations which I havent considered.
Sorry to be so lengthy but, like I am discovering in ponding, few things
have a totally simple straightforward solution when my budget is small and
my ambitions are large. Thanks again for all the help. My general naivete
was once again in full force when I first started 'building my pond'. I
love it, but every time I learn something - which is almost daily - I learn
two more things I dont know enough about. I can only begin to imagine the
disasters I would have already encountered if I didnt have this group for
soooooo much support.
Bill Brister - Austin, Texas (for Grubber it's actually Leander)


"Newbie Bill" > wrote in message
m...
> I have a small 200 gph pump (very low power usage) submerged in my pond
for
> additional aeration - just as added 'insurance'. The output is below the
> water so the water is just 'bubbling' like a natural spring might. I do
not
> want it splashing for several reasons. I have been told it is the
breaking
> of the surface which helps to oxidize the water.
> Questions: 1) Is this actually doing me some good. 2)Aesthetics aside
would
> an airstone attached be significantly better.
> Thanxx
> Bill Brister - Austin, Texas
>
>

[Benign Vanilla]

"Newbie Bill" > wrote in message
m...
> Let me try this again. Thanxx to all who have answered so far. All of
your
> suggestions are helpful but they may raise more questions than they
answer.
<snip>

What was the question again? LOL.

Seriously. Your parameters, as you say, are fine. You have adequate
filtration. Your fish are not gasping like two pack a day smokers at the
surface. Me thinks you are falling prey to one of the most primal ponding
effections...you are worrying to much. If'n your pond is workin', don't go'a
fixin' it.

Aeration is important, but it's nothing something to lose sleep over.
Certainly not scientifically speaking, but if you have moving water, good
water params and happy fish, I'd say you have plenty of aeration.

You mention the Texas summer coming...you may be more interested in some
shade.

BV.

[Ka30P]

The best way to tell if your pond is low on oxygen, the low tech, beer in hand
way, is to
get up before the sun rises. If your fish are gasping at the surface you need
more air in there. If not, they are doing fine.


kathy :-)
<A HREF="http://www.onceuponapond.com/">Once upon a pond</A>

[grubber]

"Ka30P" > wrote in message
...
>
> The best way to tell if your pond is low on oxygen, the low tech, beer in
hand
> way, is to
> get up before the sun rises. If your fish are gasping at the surface you
need
> more air in there. If not, they are doing fine.
>
>
> kathy :-)
> <A HREF="http://www.onceuponapond.com/">Once upon a pond</A>

Getting up before the sun rises and grabbing a beer before heading to the
pond may be considered uncouth. To avoid this, stay up all night drinking
beer, and when the sun rises, go out and check on the fishies. If they are
gasping for air, worry about the aeration after you've slept it off. If
they ask for a beer, you have had too many beers to make a decision. Try
again tomorrow.

[Benign Vanilla]

"grubber" > wrote in message
...
> "Ka30P" > wrote in message
> ...
> >
> > The best way to tell if your pond is low on oxygen, the low tech, beer
in
> hand
> > way, is to
> > get up before the sun rises. If your fish are gasping at the surface you
> need
> > more air in there. If not, they are doing fine.
> >
> >
> > kathy :-)
> > <A HREF="http://www.onceuponapond.com/">Once upon a pond</A>
>
> Getting up before the sun rises and grabbing a beer before heading to the
> pond may be considered uncouth. To avoid this, stay up all night drinking
> beer, and when the sun rises, go out and check on the fishies. If they
are
> gasping for air, worry about the aeration after you've slept it off. If
> they ask for a beer, you have had too many beers to make a decision. Try
> again tomorrow.

I guess I have a problem then, because I usually do this check
automatically. If the sound of the fish gasping wakes me up, I know two
things. 1) the fish need more aeration, 2) i drank too much and passed out
next to the pond.

BV.
>

[Newbie Bill]

Okay okay - You guys are tooooooooo funny. THANKS - I'm sure I do need to
tone it down a bit. Prolly part of my 'problem' is all in all things are
going great. I am addressing a 'bug' problem, but in general the pond is
great. I have 6-10 lily blooms on any given day. Water cannas about to
bloom. Other marginals getting bigger. Numbers good. Seems I did so much
and was trying to learn so much at first I just have to look for problems.
Heck I have to do something to 'justify' the many hours I'm just sitting
around watching the fishies and soaking in the beauty. I probably would be
in the top ten at least, in a tan contest. Yes, yes life is good.
Of course as mentioned, everytime I learn something I come up with 2 more
'problems'. 1-I don't drink, 2-I most definitely don't get up before dawn.
According to BV if drinking improves your ability to hear the fish gasping
from afar maybe I could just put a tape recorder out by the pond and see if
a sugar rush would help my hearing. Baby monitor? Well - maybe not .
Ein prosit, ein prosit zur gemutlichkeit! Now you've learned something. I
was an Air Force brat in Germany during high school. I DID drink then;)
Bill

"Benign Vanilla" > wrote in message
...
>
> "grubber" > wrote in message
> ...
> > "Ka30P" > wrote in message
> > ...
> > >
> > > The best way to tell if your pond is low on oxygen, the low tech, beer
> in
> > hand
> > > way, is to
> > > get up before the sun rises. If your fish are gasping at the surface
you
> > need
> > > more air in there. If not, they are doing fine.
> > >
> > >
> > > kathy :-)
> > > <A HREF="http://www.onceuponapond.com/">Once upon a pond</A>
> >
> > Getting up before the sun rises and grabbing a beer before heading to
the
> > pond may be considered uncouth. To avoid this, stay up all night
drinking
> > beer, and when the sun rises, go out and check on the fishies. If they
> are
> > gasping for air, worry about the aeration after you've slept it off. If
> > they ask for a beer, you have had too many beers to make a decision.
Try
> > again tomorrow.
>
> I guess I have a problem then, because I usually do this check
> automatically. If the sound of the fish gasping wakes me up, I know two
> things. 1) the fish need more aeration, 2) i drank too much and passed out
> next to the pond.
>
> BV.
> >
>
>
>

[Ka30P]

Okay, I'd better explain the dawn patrol method ;-)
BV's beer aside (as in laid back ponding method, which I am in full agreement,
though I don't drink, medication forbids...)

Anyway. At night the plant life in the pond stops producing oxygen and starts
consuming oxygen. One reason why it is important to run fountains, waterfalls,
spitters and/or bubblers 24 hours a day.
If the pond is not going to support the fish through out the night it will be
easily apparent right before sunrise and the fish will be gasping at the
surface. I saw this in my frog bog (when it had fish). Azollza had almost
completely taken over the pond and so I got up early (it also helps to be a
morning person) and the poor fish were gasping at the surface. Now I knew
there was no way I was going to get all that azolla out as it was reproducing
every two minutes so I put in a minnow trap and removed as many fish as I could
catch. Later I removed all the fish from that pond.
Interestingly the azolla all died once the air temps reached the joyful week of
105 to 110 we get here in August. The pond is also only about 10 inches deep
and so the water was pretty darn warm - another reason not to keep goldfish in
there.


kathy :-)
<A HREF="http://www.onceuponapond.com/">Once upon a pond</A>

[Sean Dinh]

Standing water create a thermocline, whereas the lower layer of the water body
is much cooler than the top layer. Since your pond is only 25" deep, and that
you have the main pump running, thermocline should not be an issue.

I hate to see any water feature with a venturi or an airstone. They're so
unnatural. The parts I hate the most about them are that they disturb the water
surface and create extreme light ray distortion, making viewing the content of
the body of water highly distractive. There is little efficiency in oxygenating
the water through airstone. The venturi adds little more to that.

The best way to oxygenate the water is to use a Trickle Tower. Water flowing
down hugh number of small items creates extreme water surface disruption. This
let the water to have massive gas exchange rate, when comparing to airstone or
venturi.

If you want an application for your small pump, make a small TT to use it. Fill
a 5 gallon bucket filled with lava rock. Let that pump feed this TT. This is my
only setup I use for my 600 gallons pond.

Newbie Bill wrote:

> Let me try this again. Thanxx to all who have answered so far. All of your
> suggestions are helpful but they may raise more questions than they answer.
> Let me revert to 'pump layout 101' questions.
> My pond is around 800 gallons. It is shaped like a snowman with a smaller
> 'circle' on top (about 5 ft wide) of a larger one (about 6 1/2 ft). There is
> very little 'indentation'/restriction between the two circles. The top has
> an irregular buttom (has a platform in it as the original owner had designed
> it as mostly a spitter pond) but it is only about 18" deep in the small end
> and 25" in the larger end. It is a little over 9 feet long. Accordingly it
> does has a high surface to volume ratio, which I assume helps a little bit
> in gas exchange. I have a 1600 gal Laguna pump(full open) running from the
> deeper end to my filter which comes back in over a small shelf of two flat
> rocks stacked on each other, in the shallow end. This does create minimal
> splashing, some ripples and bubbles. The small pump in question is in the
> middle of the larger circle. Surprising to me, the bubbling/rolling from
> the 200 gph pump actually produces stronger ripples than the 'splash' end
> (floating food is pushed towards the 'waterfall'). I have a bunch of water
> lilies around the edge of the deep end which is why I am trying to avoid
> splashing with the little pump. Even a very small bell fountain effect was
> splashing the leaves and making visibility poor. It wont be long before the
> water rolling from the small pump is pretty much the only open surface on
> the deep end. I have about 8 submerged anarchis.
> Everything is running well right now but I am particularly concerned about
> it being so shallow and my first ponding hot Texas summer coming on. It
> gets full afternoon sun. I have more flow from my big pump than I need. I
> was planning to build a 'sink filter' as filter #2 and divert some flow to
> it, as my fish load is very high. Naturally I am not getting a full 1600
> gph due to elevation loss, but I think it would be adequate for both. Water
> parameters are perfect right now, but they are growing right.
> Now, as a result of your valuable input I am unsure how to proceed. I
> would very much appreciate your educated guesses. I could divert the large
> pump and try the venturi idea, and add new pump and filter as/if required
> later. (Trying to avoid higher electricity usage when possible.) Your
> input has now started me to consider zonation which I assume is
> stratification(just read a bit about this). Perhaps? I should divert the
> large pump for additional airation and just us the small to move lower water
> some. I hadn't thought it through but to put in an airstone I would need
> (even if small) an external pump that sucks air and not water right. I am a
> bit concerned about moving the small pump much deeper since it has no
> prefilter, just small slits in the case, which seem to plug up within 2-4
> weeks just from algae growth, much less pulling sediment. The fountain tube
> attached (I didnt mention before) put the bottom of the pump about a foot
> deep and exiting about an inch from the water surface. I suspect if I lower
> it much more there will be very little rolling water on the surface. I am
> also wondering if I should be diverting from the large pump directly into
> the pond just for water movement. or. or. or. Probably there are other
> permutations which I havent considered.
> Sorry to be so lengthy but, like I am discovering in ponding, few things
> have a totally simple straightforward solution when my budget is small and
> my ambitions are large. Thanks again for all the help. My general naivete
> was once again in full force when I first started 'building my pond'. I
> love it, but every time I learn something - which is almost daily - I learn
> two more things I dont know enough about. I can only begin to imagine the
> disasters I would have already encountered if I didnt have this group for
> soooooo much support.
> Bill Brister - Austin, Texas (for Grubber it's actually Leander)

[Newbie Bill]

Hi Sean - I appreciate yet another possible suggestion. I generally agree
with what you are saying about disrubting the water, but I guess I have
gotten used to what I have now. That is one of the reasons I didnt put the
outflow out of the water, because it disrupted it much more. I still will
probably get a standby setup of something like the venturi or airstone for
future instances when I am treating the pond and extra aeration is
suggested.

I have tried to read up a little on your trickle tower but perhaps your
suggestions will answer quicker. First of all - "natural'. If I am
understanding the idea - how do you get a bucket of rocks, sticking up out
of your pond to look natural? I have my babbling brook effect pretty much
in the middle of the 'deep' end with the thought it will distribute a little
better. If the trickle filter is 'hidden' on the side will the aeration
dispurse as evenly? or is that a real consideration. I am obviously missing
something as well - newbie remember. The few things that I read sounded
like a trickle tower is essentially a bio filter. It makes sense if the
water is getting oxygen and then immediately falling on the rocks these bio
bugs would be well aerated as compared to other methods - but does this
actually create more oxygen available to the pond. Lastly? I have tried the
"gravel in the milk crate prefilter idea" and even that I found very
difficult to pull from the pond. Wouldnt this or any suggestion of filling
a 5 pound bucket with pea gravel be very heavy to put in and out of the
pond?
Thanks for you help!
Bill Brister

"Sean Dinh" > wrote in message
...
> Standing water create a thermocline, whereas the lower layer of the water
body
> is much cooler than the top layer. Since your pond is only 25" deep, and
that
> you have the main pump running, thermocline should not be an issue.
>
> I hate to see any water feature with a venturi or an airstone. They're so
> unnatural. The parts I hate the most about them are that they disturb the
water
> surface and create extreme light ray distortion, making viewing the
content of
> the body of water highly distractive. There is little efficiency in
oxygenating
> the water through airstone. The venturi adds little more to that.
>
> The best way to oxygenate the water is to use a Trickle Tower. Water
flowing
> down hugh number of small items creates extreme water surface disruption.
This
> let the water to have massive gas exchange rate, when comparing to
airstone or
> venturi.
>
> If you want an application for your small pump, make a small TT to use it.
Fill
> a 5 gallon bucket filled with lava rock. Let that pump feed this TT. This
is my
> only setup I use for my 600 gallons pond.
>
> Newbie Bill wrote:
>
> > Let me try this again. Thanxx to all who have answered so far. All of
your
> > suggestions are helpful but they may raise more questions than they
answer.
> > Let me revert to 'pump layout 101' questions.
> > My pond is around 800 gallons. It is shaped like a snowman with a
smaller
> > 'circle' on top (about 5 ft wide) of a larger one (about 6 1/2 ft).
There is
> > very little 'indentation'/restriction between the two circles. The top
has
> > an irregular buttom (has a platform in it as the original owner had
designed
> > it as mostly a spitter pond) but it is only about 18" deep in the small
end
> > and 25" in the larger end. It is a little over 9 feet long. Accordingly
it
> > does has a high surface to volume ratio, which I assume helps a little
bit
> > in gas exchange. I have a 1600 gal Laguna pump(full open) running from
the
> > deeper end to my filter which comes back in over a small shelf of two
flat
> > rocks stacked on each other, in the shallow end. This does create
minimal
> > splashing, some ripples and bubbles. The small pump in question is in
the
> > middle of the larger circle. Surprising to me, the bubbling/rolling
from
> > the 200 gph pump actually produces stronger ripples than the 'splash'
end
> > (floating food is pushed towards the 'waterfall'). I have a bunch of
water
> > lilies around the edge of the deep end which is why I am trying to avoid
> > splashing with the little pump. Even a very small bell fountain effect
was
> > splashing the leaves and making visibility poor. It wont be long before
the
> > water rolling from the small pump is pretty much the only open surface
on
> > the deep end. I have about 8 submerged anarchis.
> > Everything is running well right now but I am particularly concerned
about
> > it being so shallow and my first ponding hot Texas summer coming on. It
> > gets full afternoon sun. I have more flow from my big pump than I need.
I
> > was planning to build a 'sink filter' as filter #2 and divert some flow
to
> > it, as my fish load is very high. Naturally I am not getting a full
1600
> > gph due to elevation loss, but I think it would be adequate for both.
Water
> > parameters are perfect right now, but they are growing right.
> > Now, as a result of your valuable input I am unsure how to proceed. I
> > would very much appreciate your educated guesses. I could divert the
large
> > pump and try the venturi idea, and add new pump and filter as/if
required
> > later. (Trying to avoid higher electricity usage when possible.) Your
> > input has now started me to consider zonation which I assume is
> > stratification(just read a bit about this). Perhaps? I should divert
the
> > large pump for additional airation and just us the small to move lower
water
> > some. I hadn't thought it through but to put in an airstone I would need
> > (even if small) an external pump that sucks air and not water right. I
am a
> > bit concerned about moving the small pump much deeper since it has no
> > prefilter, just small slits in the case, which seem to plug up within
2-4
> > weeks just from algae growth, much less pulling sediment. The fountain
tube
> > attached (I didnt mention before) put the bottom of the pump about a
foot
> > deep and exiting about an inch from the water surface. I suspect if I
lower
> > it much more there will be very little rolling water on the surface. I
am
> > also wondering if I should be diverting from the large pump directly
into
> > the pond just for water movement. or. or. or. Probably there are other
> > permutations which I havent considered.
> > Sorry to be so lengthy but, like I am discovering in ponding, few
things
> > have a totally simple straightforward solution when my budget is small
and
> > my ambitions are large. Thanks again for all the help. My general
naivete
> > was once again in full force when I first started 'building my pond'. I
> > love it, but every time I learn something - which is almost daily - I
learn
> > two more things I dont know enough about. I can only begin to imagine
the
> > disasters I would have already encountered if I didnt have this group
for
> > soooooo much support.
> > Bill Brister - Austin, Texas (for Grubber it's actually Leander)
>

[Ka30P]

Just for fun I entered trickle tower into
google images and found 58 images listed.
http://images.google.com/images?q=trickle+tower&ie=ISO-8859-1&hl=en&btnG=G
oogle+Search

I don't have one but they were all the rage on the water gardening magazine
forum a couple of years ago.


kathy :-)
<A HREF="http://www.onceuponapond.com/">Once upon a pond</A>

[Tom L. La Bron]

Bill,

The only problem with waiting for the noise of gasping
fish is that you may very quickly be losing your
largest fish. The big ones always die first.

For the price of a small air pump at Wal-Mart and Ice
Cream Container to cover it and a brick to sit the pump
on under the Ice Cream container and a length of tubing
that puts an airstone in the deepest part of your pond
weighted down in some way, you can get a nice rising
column of air bubble and water to help you fish through
the summer.

It is a small price to pay, for a little more insurance.

Tom L.L.
--------------------------------------------

Newbie Bill wrote:

> Okay okay - You guys are tooooooooo funny. THANKS - I'm sure I do need to
> tone it down a bit. Prolly part of my 'problem' is all in all things are
> going great. I am addressing a 'bug' problem, but in general the pond is
> great. I have 6-10 lily blooms on any given day. Water cannas about to
> bloom. Other marginals getting bigger. Numbers good. Seems I did so much
> and was trying to learn so much at first I just have to look for problems.
> Heck I have to do something to 'justify' the many hours I'm just sitting
> around watching the fishies and soaking in the beauty. I probably would be
> in the top ten at least, in a tan contest. Yes, yes life is good.
> Of course as mentioned, everytime I learn something I come up with 2 more
> 'problems'. 1-I don't drink, 2-I most definitely don't get up before dawn.
> According to BV if drinking improves your ability to hear the fish gasping
> from afar maybe I could just put a tape recorder out by the pond and see if
> a sugar rush would help my hearing. Baby monitor? Well - maybe not .
> Ein prosit, ein prosit zur gemutlichkeit! Now you've learned something. I
> was an Air Force brat in Germany during high school. I DID drink then;)
> Bill
>
> "Benign Vanilla" > wrote in message
> ...
>
>>"grubber" > wrote in message
...
>>
>>>"Ka30P" > wrote in message
...
>>>
>>>>The best way to tell if your pond is low on oxygen, the low tech, beer
>>
>>in
>>
>>>hand
>>>
>>>>way, is to
>>>>get up before the sun rises. If your fish are gasping at the surface
>
> you
>
>>>need
>>>
>>>>more air in there. If not, they are doing fine.
>>>>
>>>>
>>>>kathy :-)
>>>><A HREF="http://www.onceuponapond.com/">Once upon a pond</A>
>>>
>>>Getting up before the sun rises and grabbing a beer before heading to
>
> the
>
>>>pond may be considered uncouth. To avoid this, stay up all night
>
> drinking
>
>>>beer, and when the sun rises, go out and check on the fishies. If they
>>
>>are
>>
>>>gasping for air, worry about the aeration after you've slept it off. If
>>>they ask for a beer, you have had too many beers to make a decision.
>
> Try
>
>>>again tomorrow.
>>
>>I guess I have a problem then, because I usually do this check
>>automatically. If the sound of the fish gasping wakes me up, I know two
>>things. 1) the fish need more aeration, 2) i drank too much and passed out
>>next to the pond.
>>
>>BV.
>>
>>
>>
>
>

[Sean Dinh]

Bill,

this site has pictures for a standard TT design
http://koi-uk.co.uk/trickle_tower.htm Adapt it to your 5 gallons bucket.

Gas exchange happens at the interface of water and air. The more rocks the water
trickle down on, the better the gas exchange would be. This means that the rocks
in a TT should only be coated with water, not being submersed. The more surface
area the rocks have, the better the gas exchange would be. This is why high
surface area bio balls and lava rocks are used in a TT.

Set the TT far away somewhere. Hide it if you prefer that way. Run a hose from
the spigot at the bottom of the TT to the pond, feed into it either above or
below the water.

Since your 200 gph pump is weak and has no prefilter, you need to design a
prefilter to cope with constant maintenance from pump clogging. Someone recently
mentioned clamping the pump between 2 water plant baskets as a prefilter. I used
only 1.

My 600 gallons pond is in SoCal. It's being aerated by a 180 gph pump feeding a
5 gallons bucket TT. It had no problems during 2 days heat wave last time.

Newbie Bill wrote:

> I have tried to read up a little on your trickle tower but perhaps your
> suggestions will answer quicker. First of all - "natural'. If I am
> understanding the idea - how do you get a bucket of rocks, sticking up out
> of your pond to look natural? I have my babbling brook effect pretty much
> in the middle of the 'deep' end with the thought it will distribute a little
> better. If the trickle filter is 'hidden' on the side will the aeration
> dispurse as evenly? or is that a real consideration. I am obviously missing
> something as well - newbie remember. The few things that I read sounded
> like a trickle tower is essentially a bio filter. It makes sense if the
> water is getting oxygen and then immediately falling on the rocks these bio
> bugs would be well aerated as compared to other methods - but does this
> actually create more oxygen available to the pond. Lastly? I have tried the
> "gravel in the milk crate prefilter idea" and even that I found very
> difficult to pull from the pond. Wouldnt this or any suggestion of filling
> a 5 pound bucket with pea gravel be very heavy to put in and out of the
> pond?
> Thanks for you help!
> Bill Brister

[[email protected]]

actually, the smaller the air bubbles coming out of the air stone the larger the over
all surface to volume ratio. which is why airstones can put so much more air into
water that just disturbing the surface.
now if those bubbles break the surface and rise into the air there is exchange both
on the inside and outside of that film of water.
an airstone in the water moves a water column up to the top and it flows outwards
creating a moving column of water that brings water from the bottom up to the top or
vertically. this is much better circulation than a venturi that moves water only
horizontally across the surface.
pumps should not be put on the bottom of ponds. too much chance of something going
wrong and the pond being drained.
Ingrid

>Actually, the air water interface is at least as important, if not more
>important. The larger the surface area of the air/water interface, the greater
>the exchange of gases. While an airstone can pump air through the water, it
>does so in a limited way, since it is only making contact with a small area of
>water at a time and only influences the immediate area around the airstone. By
>inducing a current across the surface of the water with a pump located at the
>bottom of the pond, you will induce more gas exchange because of the greater
>surface area involved. It also helps in preventing zonation from froming in the
>water column, since you are pumping the water from the bottom and streaming it
>across the surface, which in turn, allows oxygenated water to move towards the
>bottom of the pond. The ripples going across the surface of the pond also looks
>nice.
>



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
List Manager: Puregold Goldfish List
http://puregold.aquaria.net/
www.drsolo.com
Solve the problem, dont waste energy finding who's to blame
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Unfortunately, I receive no money, gifts, discounts or other
compensation for all the damn work I do, nor for any of the
endorsements or recommendations I make.

[[email protected]]

the greatest risk to fish for low oxygen is
1. pond water is hot, less oxygen dissolves in hot water
2. the pond is full of green algae (well maybe green plants too)
3. big fish (big fish suffer first)
4. poor aeration

if you absolutely, positively want to make damn sure there is sufficient oxygen get
an aquatic ecosystem whitewater regenerative blower ($179) or their swee****er
(around $379) and a foot long air stone for every 1000 gallons.
Ingrid


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
List Manager: Puregold Goldfish List
http://puregold.aquaria.net/
www.drsolo.com
Solve the problem, dont waste energy finding who's to blame
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Unfortunately, I receive no money, gifts, discounts or other
compensation for all the damn work I do, nor for any of the
endorsements or recommendations I make.

[[email protected]]

my foot long airstone is right under the waterfall, I have it hanging length ways
(horizontal) so it foams the water as it spills over from the veggie filter.
actually I could put the air stone into the veggie filter too.
my water lilies are 2-3' away and not disturbed at all. the area where I sit and
watch my fish is glass smooth... well except when the buggers see me they go nuts
splashing me for food.
there is tremendous efficiency in airstones ..
Ingrid

Sean Dinh > wrote:
>I hate to see any water feature with a venturi or an airstone. They're so
>unnatural. The parts I hate the most about them are that they disturb the water
>surface and create extreme light ray distortion, making viewing the content of
>the body of water highly distractive. There is little efficiency in oxygenating
>the water through airstone. The venturi adds little more to that.


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
List Manager: Puregold Goldfish List
http://puregold.aquaria.net/
www.drsolo.com
Solve the problem, dont waste energy finding who's to blame
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Unfortunately, I receive no money, gifts, discounts or other
compensation for all the damn work I do, nor for any of the
endorsements or recommendations I make.

[[email protected]]

trickle towers are extremely good for people with less than ideal water, especially
those with high CO2, iron or hydrogen sulfide in their well water. Ingrid

(Ka30P) wrote:

>
>Just for fun I entered trickle tower into
>google images and found 58 images listed.
>http://images.google.com/images?q=trickle+tower&ie=ISO-8859-1&hl=en&btnG=G
>oogle+Search
>
>I don't have one but they were all the rage on the water gardening magazine
>forum a couple of years ago.
>
>
>kathy :-)
><A HREF="http://www.onceuponapond.com/">Once upon a pond</A>



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
List Manager: Puregold Goldfish List
http://puregold.aquaria.net/
www.drsolo.com
Solve the problem, dont waste energy finding who's to blame
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Unfortunately, I receive no money, gifts, discounts or other
compensation for all the damn work I do, nor for any of the
endorsements or recommendations I make.

[George]

> wrote in message
...
> actually, the smaller the air bubbles coming out of the air stone the larger
> the over
> all surface to volume ratio. which is why airstones can put so much more air
> into
> water that just disturbing the surface.
> now if those bubbles break the surface and rise into the air there is exchange
> both
> on the inside and outside of that film of water.
> an airstone in the water moves a water column up to the top and it flows
> outwards
> creating a moving column of water that brings water from the bottom up to the
> top or
> vertically. this is much better circulation than a venturi that moves water
> only
> horizontally across the surface.

In a pond, as opposed to an aquarium, in order to get an equivalent water flow
and gas exchange from an airstone would require vastly more air than most people
are willing to spend the money on, in my opinion. And the water movement into
the column disipates over a fairly short distance. oxygenating fresh water is
simpler, and less critical than it is with salt water, especially with goldfish,
since they can practically live in sewage. Larger fish like koi are a different
story. But the whole issue is probably moot anyway, since if the fish aren't
suffering, there is really no point in going to the added expense and trouble.
I can see a situation in which you have too much bioload in the pond then you
would need to add air, but to me the best solution is to simply reduce the
bioload. Fish gasping for air because of too little oxygen in the water is a
sure sign of a pond that simply has too much growth. The only time I use an
airstone is in the dead of winter to keep the water moving, since I don't want
to damage my pump by having it freeze up on me. I do use a floating de-icer,
but that doesn't guarantee that the water in the filter won't freeze.

> pumps should not be put on the bottom of ponds. too much chance of something
> going
> wrong and the pond being drained.
> Ingrid

I agree that you should never place the pump directly on the bottom of the pond
unprotected. However, if the piping is installed properly, and you add an
adequate pre-filter to the pump intake (one that can be easily cleaned), I see
no reason not to put a pump on the bottom. I don't do it simply because my
filtration system is designed differently. Personally, I use the suction method
in my filtration system instead of positive pressure for several reasons.
First, I have a 5 gallon pre-filter in the bottom of the pond, to which is
attached to the intake of the main filter. The main filter consists of an old
jacuzzi swimming pool filter housing (about 40 gallons capacity) that I have
adapted for use in the pond. The filter is submersed in the pond out of sight
beneath my waterfall. The intake line attaches to a 90degree elbow, which is
attached to a threaded coupling that goes into the bottom of the filter tank.
Attached to the coupling on the inside of the tank is a stainless steel basket
line strainer that catches any debris that happens to get past the prefilter
(which usually is very little). Surrounding the strainer is about 50 lbs of
quartz aquarium gravel, which fills the tank about half way to the top. Above
the gravel is a very course mesh polymer pad to keep the gravel from getting
sucked up into the pump. The pump sits about two inches above this pad. The
pump is attached to the top plate via fittings, into which the outlet is
attached. The electrical cable also goes through the top plate via a rubber
electrical grommet. The top of the filter sits about three inches below the top
of the water in the pond, so the pump intake itself is submerged into about the
top 15 inches of water.

The effect is just to suck or pull the water through the system. The only water
going through the pump is filtered water. It is at the end instead of at the
beginning of the filtration process. An added benfit is that it can never pump
all of the water out of the pond. I always know when the pre-filter needs
cleaning or the water level has dropped for some reason, because the pump will
raise pitch due to the water level being drawn down to the level of the pump
intake (inside the filter housing), causing a slight cavitation. Since I check
it every day, there is very little risk of the pump burning out due to extended
caviation and/or overheating. And the pump was actually designed to run
practially dry. When I get a chance, I will give you a link to some photos of
the filtration system. Oh, and because I use a very efficient pre-filter, I
almost never have to backwash the main filter, which allows the bacteria to
flourish undisturbed. I do, about once every six months, open the filter and
swish the gravel around to get rid of any potential clumping, and then pump the
gunk out into a bucket. But I haven't had to do it yet this year. I still have
full water flow. One day, when I decide to spend the money, which will probably
be whenever the pump fails, this is the pump that is on my "some day" wish list:

http://www.flotecpump.com/

>>Actually, the air water interface is at least as important, if not more
>>important. The larger the surface area of the air/water interface, the
>>greater
>>the exchange of gases. While an airstone can pump air through the water, it
>>does so in a limited way, since it is only making contact with a small area of
>>water at a time and only influences the immediate area around the airstone.
>>By
>>inducing a current across the surface of the water with a pump located at the
>>bottom of the pond, you will induce more gas exchange because of the greater
>>surface area involved. It also helps in preventing zonation from froming in
>>the
>>water column, since you are pumping the water from the bottom and streaming it
>>across the surface, which in turn, allows oxygenated water to move towards the
>>bottom of the pond. The ripples going across the surface of the pond also
>>looks
>>nice.
>>
>
>
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> List Manager: Puregold Goldfish List
> http://puregold.aquaria.net/
> www.drsolo.com
> Solve the problem, dont waste energy finding who's to blame
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Unfortunately, I receive no money, gifts, discounts or other
> compensation for all the damn work I do, nor for any of the
> endorsements or recommendations I make.

[D Kat]

I really liked the strawberry pot with the lava stone in it. I'm going to
have to figure out how to impliment that. I worry though if it will make
the water hotter...

I have my pump in a 5 gallon bucket that is filled with lava rock. I clean
it about once a year and have had no trouble with it. Basically you can
tell if it needs cleaned if the rate of water flow slows.


"Sean Dinh" > wrote in message
...
> Bill,
>
> this site has pictures for a standard TT design
> http://koi-uk.co.uk/trickle_tower.htm Adapt it to your 5 gallons bucket.
>
> Gas exchange happens at the interface of water and air. The more rocks the
water
> trickle down on, the better the gas exchange would be. This means that the
rocks
> in a TT should only be coated with water, not being submersed. The more
surface
> area the rocks have, the better the gas exchange would be. This is why
high
> surface area bio balls and lava rocks are used in a TT.
>
> Set the TT far away somewhere. Hide it if you prefer that way. Run a hose
from
> the spigot at the bottom of the TT to the pond, feed into it either above
or
> below the water.
>
> Since your 200 gph pump is weak and has no prefilter, you need to design a
> prefilter to cope with constant maintenance from pump clogging. Someone
recently
> mentioned clamping the pump between 2 water plant baskets as a prefilter.
I used
> only 1.
>
> My 600 gallons pond is in SoCal. It's being aerated by a 180 gph pump
feeding a
> 5 gallons bucket TT. It had no problems during 2 days heat wave last time.
>
> Newbie Bill wrote:
>
> > I have tried to read up a little on your trickle tower but perhaps your
> > suggestions will answer quicker. First of all - "natural'. If I am
> > understanding the idea - how do you get a bucket of rocks, sticking up
out
> > of your pond to look natural? I have my babbling brook effect pretty
much
> > in the middle of the 'deep' end with the thought it will distribute a
little
> > better. If the trickle filter is 'hidden' on the side will the aeration
> > dispurse as evenly? or is that a real consideration. I am obviously
missing
> > something as well - newbie remember. The few things that I read sounded
> > like a trickle tower is essentially a bio filter. It makes sense if the
> > water is getting oxygen and then immediately falling on the rocks these
bio
> > bugs would be well aerated as compared to other methods - but does this
> > actually create more oxygen available to the pond. Lastly? I have tried
the
> > "gravel in the milk crate prefilter idea" and even that I found very
> > difficult to pull from the pond. Wouldnt this or any suggestion of
filling
> > a 5 pound bucket with pea gravel be very heavy to put in and out of the
> > pond?
> > Thanks for you help!
> > Bill Brister
>

[Benign Vanilla]

"D Kat" > wrote in message
...
> I really liked the strawberry pot with the lava stone in it. I'm going to
> have to figure out how to impliment that. I worry though if it will make
> the water hotter...
>
> I have my pump in a 5 gallon bucket that is filled with lava rock. I
clean
> it about once a year and have had no trouble with it. Basically you can
> tell if it needs cleaned if the rate of water flow slows.
<snip>

I like that one too, and since I screwed up when building my VF, you see
mycheck valve. It would make a nice platform to site a decorative pot on to.
My concern is that the strawberry pots I always see, seem to be unfinished
terracotta. That will never last in the pond.

BV.

[[email protected]]

I find GF more touchy about water quality and aeration than koi. Ingrid

" George" > wrote:
oxygenating fresh water is
>simpler, and less critical than it is with salt water, especially with goldfish,
>since they can practically live in sewage.


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
List Manager: Puregold Goldfish List
http://puregold.aquaria.net/
www.drsolo.com
Solve the problem, dont waste energy finding who's to blame
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Unfortunately, I receive no money, gifts, discounts or other
compensation for all the damn work I do, nor for any of the
endorsements or recommendations I make.

[George]

> wrote in message
...
>I find GF more touchy about water quality and aeration than koi. Ingrid

Really? I don't understand why. Maybe I am mistaken, but aren't they natural
air gulpers. It has always been my understanding that goldfish can tolerate
less than ideal conditions, while koi cannot.

> " George" > wrote:
> oxygenating fresh water is
>>simpler, and less critical than it is with salt water, especially with
>>goldfish,
>>since they can practically live in sewage.
>
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> List Manager: Puregold Goldfish List
> http://puregold.aquaria.net/
> www.drsolo.com
> Solve the problem, dont waste energy finding who's to blame
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Unfortunately, I receive no money, gifts, discounts or other
> compensation for all the damn work I do, nor for any of the
> endorsements or recommendations I make.

[Benign Vanilla]

" George" > wrote in message
...
>
> > wrote in message
> ...
> >I find GF more touchy about water quality and aeration than koi. Ingrid
>
> Really? I don't understand why. Maybe I am mistaken, but aren't they
natural
> air gulpers. It has always been my understanding that goldfish can
tolerate
> less than ideal conditions, while koi cannot.

My mother was baby sitting her neighbor's goldfish for a week last year. The
neighbor just told them to feed 'em once a day. We showed up to the house,
and their kitchen had a distinctive diaper odor. We thought nothing of it,
because our nephew had been there, and we figured the garbage can was to
blame. I took it out. The smell persisted. At one point I went over to fish
bowl to say hello, and the smell from the gallon or so of water nearly
knocked me off my feet. I've smelled toilets in bars that were cleaner then
this.

I had no dechlor, and didn't know of a pet shop, so we set some water out
all night, and did partial water changes over two days. By the end of the
weekend, the fish was no longer gulping, and the odor was gone.

I can't speak for all goldies, but this guy was surviving in absolute filth.

BV.

[[email protected]]

no.. those are bettas can gulp air. the idea comes from the goldfish bowl and the
carnival GF. most all die, but the occasional one survives horrible conditions.
fancy GF dont survive long at all. it is always the commons that make it. Ingrid

" George" > wrote:
>Really? I don't understand why. Maybe I am mistaken, but aren't they natural
>air gulpers. It has always been my understanding that goldfish can tolerate
>less than ideal conditions, while koi cannot.


~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
List Manager: Puregold Goldfish List
http://puregold.aquaria.net/
www.drsolo.com
Solve the problem, dont waste energy finding who's to blame
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Unfortunately, I receive no money, gifts, discounts or other
compensation for all the damn work I do, nor for any of the
endorsements or recommendations I make.

[George]

> wrote in message
...
> no.. those are bettas can gulp air. the idea comes from the goldfish bowl and
> the
> carnival GF. most all die, but the occasional one survives horrible
> conditions.
> fancy GF dont survive long at all. it is always the commons that make it.
> Ingrid
>
> " George" > wrote:
>>Really? I don't understand why. Maybe I am mistaken, but aren't they natural
>>air gulpers. It has always been my understanding that goldfish can tolerate
>>less than ideal conditions, while koi cannot.
>

Well, apparently you are right. I did some research and found this article:

http://www.bellaonline.com/articles/art3503.asp

Excuse my ignorance. Chalk it up to many years of experience raising tropical
and salt water fish, and virtually none with cold water species (except for the
last year or so). Everyone who has goldfish should read that artcicle. You
live and learn, right?

[[email protected]]

the only part she got wrong was em being cold water fish. they arent. their
metabolism peaks at 75-78oF. Ingrid

" George" > wrote:

> wrote in message
...
>> no.. those are bettas can gulp air. the idea comes from the goldfish bowl and
>> the
>> carnival GF. most all die, but the occasional one survives horrible
>> conditions.
>> fancy GF dont survive long at all. it is always the commons that make it.
>> Ingrid
>>
>> " George" > wrote:
>>>Really? I don't understand why. Maybe I am mistaken, but aren't they natural
>>>air gulpers. It has always been my understanding that goldfish can tolerate
>>>less than ideal conditions, while koi cannot.
>>
>
>Well, apparently you are right. I did some research and found this article:
>
>http://www.bellaonline.com/articles/art3503.asp
>
>Excuse my ignorance. Chalk it up to many years of experience raising tropical
>and salt water fish, and virtually none with cold water species (except for the
>last year or so). Everyone who has goldfish should read that artcicle. You
>live and learn, right?
>



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
List Manager: Puregold Goldfish List
http://puregold.aquaria.net/
www.drsolo.com
Solve the problem, dont waste energy finding who's to blame
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Unfortunately, I receive no money, gifts, discounts or other
compensation for all the damn work I do, nor for any of the
endorsements or recommendations I make.

[George]

> wrote in message
...
> the only part she got wrong was em being cold water fish. they arent. their
> metabolism peaks at 75-78oF. Ingrid

I thought something was wrong with that, but I wanted to hear it from somebody
else first.

> " George" > wrote:
>
> wrote in message
...
>>> no.. those are bettas can gulp air. the idea comes from the goldfish bowl
>>> and
>>> the
>>> carnival GF. most all die, but the occasional one survives horrible
>>> conditions.
>>> fancy GF dont survive long at all. it is always the commons that make it.
>>> Ingrid
>>>
>>> " George" > wrote:
>>>>Really? I don't understand why. Maybe I am mistaken, but aren't they
>>>>natural
>>>>air gulpers. It has always been my understanding that goldfish can tolerate
>>>>less than ideal conditions, while koi cannot.
>>>
>>
>>Well, apparently you are right. I did some research and found this article:
>>
>>http://www.bellaonline.com/articles/art3503.asp
>>
>>Excuse my ignorance. Chalk it up to many years of experience raising tropical
>>and salt water fish, and virtually none with cold water species (except for
>>the
>>last year or so). Everyone who has goldfish should read that artcicle. You
>>live and learn, right?
>>
>
>
>
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> List Manager: Puregold Goldfish List
> http://puregold.aquaria.net/
> www.drsolo.com
> Solve the problem, dont waste energy finding who's to blame
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Unfortunately, I receive no money, gifts, discounts or other
> compensation for all the damn work I do, nor for any of the
> endorsements or recommendations I make.

[bluegill phil]

thanks for the info grubber
On Mon, 07 Jun 2004 12:33:27 GMT, "Grubber"
> wrote:

>"Newbie Bill" > wrote in message
m...
>> I have a small 200 gph pump (very low power usage) submerged in my pond
>for
>> additional aeration - just as added 'insurance'. The output is below the
>> water so the water is just 'bubbling' like a natural spring might. I do
>not
>> want it splashing for several reasons. I have been told it is the
>breaking
>> of the surface which helps to oxidize the water.
>> Questions: 1) Is this actually doing me some good. 2)Aesthetics aside
>would
>> an airstone attached be significantly better.
>> Thanxx
>> Bill Brister - Austin, Texas
>>
>>
>
>Try making a venturi out of pvc. This will give you the circulation benefit
>of the pump with more aeration than an airstone. You can also make it for a
>couple of bucks, so it's cheap to try.
>
>Basically, your pump output goes into a piece of horizontal 1/2" pvc a
>couple of feet long. Cut the pvc in half and add a T with the opening
>pointing straight up. Get another piece of pvc long enough to fit in the T
>and stick a couple inches out of the water. Cut one end at a 45 degree
>angle and shave the pvc so it will fit past the stop in the T. It needs to
>get down into the T and get into the flow coming from the pump, with the
>open angle away from the pump. The water flow sucks air in from the upright
>pvc and bubbles out of the lower pipe.
>
>Here's a possibly better explanation, with a different method. With a small
>pump, I'd stick with 1/2" pvc and shaving the pvc may be easier than finding
>tubing that will fit inside the 1/2" pvc.
>
>http://spaghoops.com/pond/venturi.htm
>
>I'm also in Austin btw. My fish love playing in the bubbles, although I've
>got a 1600 gph pump on the venturi which gives them a pretty good current to
>play in.
>