Water circulation to prevent stagnation?

Hi all

I have a tank with two small dempseys in it, with two filters - a small
external cannister and an internal powerhead filter.

When the water is filled to the top neither filter outputs produce any air
bubbles in the water, and only a small current... enough to push debris
around the tank, with a ripple on the surface.

Is this enough to keep the water from stagnating?

TIA



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Posted via a free Usenet account from http://www.teranews.com

"nut" wrote in message
.. .
Hi all

I have a tank with two small dempseys in it, with two filters - a small
external cannister and an internal powerhead filter.

When the water is filled to the top neither filter outputs produce any air
bubbles in the water, and only a small current... enough to push debris
around the tank, with a ripple on the surface.

Is this enough to keep the water from stagnating?
===================
Yes! You do realize how large and aggressive these fish get I hope.
--
RM....
Frugal ponding since 1995.
rec.ponder since late 1996.
My Pond & Aquarium Pages:
http://tinyurl.com/9do58
~~~~ }((((* ~~~ }{{{{(ö

You should be fine for some time with the setup. Jack Dempseys are
pretty neat fish IMHO. Depending on tank size you should be fine with
the setup........They will outgrow a 10 gal tank but it will take a
bit of time......just something to bbe aware of.
On Thu, 8 Mar 2007 20:47:10 -0000, "nut"
wrote:

Hi all

I have a tank with two small dempseys in it, with two filters - a small
external cannister and an internal powerhead filter.

When the water is filled to the top neither filter outputs produce any air
bubbles in the water, and only a small current... enough to push debris
around the tank, with a ripple on the surface.

Is this enough to keep the water from stagnating?

TIA



-------
I forgot more about ponds and koi than I'll ever know!

On Mar 8, 2:47?pm, "nut" wrote:
Hi all

I have a tank with two small dempseys in it, with two filters - a small
external cannister and an internal powerhead filter.

When the water is filled to the top neither filter outputs produce any air
bubbles in the water, and only a small current... enough to push debris
around the tank, with a ripple on the surface.

Is this enough to keep the water from stagnating?

TIA

--
Posted via a free Usenet account fromhttp://www.teranews.com

Hi ya Nut.
You don't need bubbles in the tank to oxygenate the water. The
turbulance at the surface from the filters is where the exchange is
being made.
Now it would be a problem if the surface was still, then yes..it would
stagnate.

Keep up with weekly water changes as well.
Your Dempseys won't be small for too long. = )

"nut" wrote in message
.. .
Hi all

I have a tank with two small dempseys in it, with two filters - a small
external cannister and an internal powerhead filter.

When the water is filled to the top neither filter outputs produce any air
bubbles in the water, and only a small current... enough to push debris
around the tank, with a ripple on the surface.

Is this enough to keep the water from stagnating?

Yes. Moving water wont stagnate.


TIA



--
Posted via a free Usenet account from http://www.teranews.com

Roy Tristan Hauer admits STALKING and trolling target victim Carol Gulley.

----- Original Message -----
From: "Tristin"
Newsgroups: rec.aquaria.marine.reefs
Sent: Thursday, February 22, 2007 5:50 PM
Subject: Green Brittle Star w/ chomped legs

Certainly not a problem for me, no matter where the bitch trods, I'll
be right behind her! Too bad its in this group...Just look at all the
posts she has created here under the varoius othe rbymns, which have
also been crossposted " convieiently" by her so to drag more adnmore
groups and people into her mess. She is nothing but an attention
whore.

nut wrote:
Hi all

I have a tank with two small dempseys in it, with two filters - a small
external cannister and an internal powerhead filter.

When the water is filled to the top neither filter outputs produce any air
bubbles in the water, and only a small current... enough to push debris
around the tank, with a ripple on the surface.

Is this enough to keep the water from stagnating?

TIA



Hi nut,

You don't say what the size the tank is but I hope that it is large
enough to accomodate them as the JDs grow - otherwise you are in for an
upgrade ;-). Apart from Angels I don't have any SA cichlids at the
moment but do have Africans - from what I've read and my experience with
the Mbuna these fish are pretty messy so over-filtering is a good idea
IMHO - along with plenty of regular water changes and gravel vacs...

Is there anything that makes you think that the water is stagnating? For
example an oily film on the surface or the water not smelling very
nice.....If not then your current set up is pretty much OK - and a
configuration that I use on a lot of my tanks - ie. one internal/one
external. I only ever add bubbles if the temperature in the tanks rises
too high in the summer - doesn't happen often in the UK......Having done
a quick google on JD's it appears that their natural habit is slow
moving water so you probably don't want to have them living in a torrent
from your filter outlets.....If you need to break up any residue from
the surface of the water try repositioning one of the filter outlets
upwards.....

Gill

Gill Passman wrote:
nut wrote:
Hi all

I have a tank with two small dempseys in it, with two filters - a
small external cannister and an internal powerhead filter.

When the water is filled to the top neither filter outputs produce
any air bubbles in the water, and only a small current... enough to
push debris around the tank, with a ripple on the surface.

Is this enough to keep the water from stagnating?

TIA



Hi nut,

You don't say what the size the tank is but I hope that it is large
enough to accomodate them as the JDs grow - otherwise you are in for
an upgrade ;-). Apart from Angels I don't have any SA cichlids at the
moment but do have Africans - from what I've read and my experience
with the Mbuna these fish are pretty messy so over-filtering is a
good idea IMHO - along with plenty of regular water changes and
gravel vacs...
Is there anything that makes you think that the water is stagnating?
For example an oily film on the surface or the water not smelling very
nice.....If not then your current set up is pretty much OK - and a
configuration that I use on a lot of my tanks - ie. one internal/one
external. I only ever add bubbles if the temperature in the tanks
rises too high in the summer - doesn't happen often in the
UK......Having done a quick google on JD's it appears that their
natural habit is slow moving water so you probably don't want to have
them living in a torrent from your filter outlets.....If you need to
break up any residue from the surface of the water try repositioning
one of the filter outlets upwards.....

Thanks for your reply Gill - and to the others who have offered their
advice.

I didn't think the water was stagnating, i was just concerned that, unless
it's getting enough oxygen & disturbance, it might... but i've since stuck a
bit of air hose on the powerhead so there's now some air bubbles getting
into the water.

The JDs are 4-5 months old... we're not 100% sure of their sex, but the
Alpha is now twice the size of the other (who, until recently, remained
hidded behind the filter) so we've called him Jack and the little one Jill.

Jack is now about 2" long, Jill is about 1".

They have their own 3 foot tank - just sand substrate & a 12" piece of
bogwood - which should do them for a year or two until they outgrow it.

In the past week or so they've started playing together and seem to be
getting on a lot better... Jack rarely chases her around the tank now and
has begun digging the sand up.

We've just picked up some live shrimp so they - and the convicts - are in
for a treat tonight... it's usually quite hard to find locally so they don't
get it much.




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"nut" wrote in message
...
..

We've just picked up some live shrimp so they - and the convicts - are in
for a treat tonight... it's usually quite hard to find locally so they
don't get it much.
=====================
The *frozen* shrimp and other goodies are much easier to find here in the
USA. The fish seem to love them as much as the fresh live foods. You may
want to ask around and see which shops carry the frozen variety where you
live.
--
RM....
Frugal ponding since 1995.
rec.ponder since late 1996.
My Pond & Aquarium Pages:
http://tinyurl.com/9do58
~~~~ }((((* ~~~ }{{{{(ö

nut wrote:

Thanks for your reply Gill - and to the others who have offered their
advice.

My pleasure.... :-)


Jack is now about 2" long, Jill is about 1".

They have their own 3 foot tank - just sand substrate & a 12" piece of
bogwood - which should do them for a year or two until they outgrow it.

You are right that you may need to upgrade - but when do any of us fish
fanatics ever, ever complain about getting another tank ;-)



In the past week or so they've started playing together and seem to be
getting on a lot better... Jack rarely chases her around the tank now and
has begun digging the sand up.

Your luck might be in - maybe you have got yourself a pair.....


We've just picked up some live shrimp so they - and the convicts - are in
for a treat tonight... it's usually quite hard to find locally so they don't
get it much.

Not sure where you are in the UK but I find my local Maidenhead Aquatics
carry both the frozen and live foods - with the live there is always the
possibility of introducing disease but all the frozen stuff I've bought
is zapped enough to make sure this isn't a problem - I buy the "Dutch
Select" brand.....You could always consider hatching your own shrimp of
course.....I've not tried it myself but am sorely tempted to set up a
brine shrimpery for my marine and freshwater fish.....

Gill