Pump for 20 ft lift

"Pszemol" wrote in message
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"George" wrote in message
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"KurtG" wrote in message
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Tristan wrote:

Checkouty a sequence 1000 pump with sal****er seals.


Thanks. You put me on the right track.

If these are large submersibles, you should be aware that they can heat
up significantly at such high head loads. This could cause problems
with maintaining a proper tank temperature. Just something to consider.

Is there any relationship between the head pressure you use
the pump with and the amount of electricity it uses up ?

If so, I would guess the relationship would be that more head
pressure would cause LESS power consumption for the same pump.

I remember that this thing with submersible water pumps and power
consumption was going against the, so called, "common sense" ;-)

Most, if not all, submersibles rely on water flow for cooling. The more
head, the less flow, the less the pump is able to shed heat. So it heats
up internally (as well as the water it is sitting in) as the head
increases. Most pumps today can handle this heat (unless the pump is
deadheaded) to a point. Whether or not the critters in the aquarium can is
another matter altogether.

George

George wrote:
If these are large submersibles, you should be aware that they can heat
up significantly at such high head loads. This could cause problems
with maintaining a proper tank temperature.

Good point. I think one of these two will work. I'm leaning towards
the smaller one.

http://tinyurl.com/ygagh8
http://tinyurl.com/ycx8fw

They are both external, so air cooled.

--Kurt

The little Giant pump really leaves a lot to be desired especially
how they get their head height. They reduce pipe size to a diameter
half of what the intake is, so they are increasing pressure but at the
same time decreasing volume so by speedingupo with a pressure increase
the water flow thewy are able to push a smaller volume of water
higher.....this amounts to pushing a pump continually on its max
limits. I do not know about LG pumps in sal****er but they have a
terrible reputation with ponders in general as to being problematic
and energy consumers a compared to other pumps.

Another hting is the Dolphin pump uses Emerson motors......which are a
bottom line of economy motors, not nortoriously noted for longevity in
lots of applications. The Sequence line of pumps use Baldor motors on
their better pumps which is pretty well a well accepted industry
standard and known for longevity. Sequence does use othe rbrands
ontheir lower line of pumps Value line or Value flo or something like
that, and if you compare specs you will see those pumps are also
going to consume a lot more watts overall to attain the same
performance as a Baldor powered pump does. Its allin the efficieincy
of the motors......Personally I would wait and save up a bit more
money if I was short and buy a top line pump with better energy
consumptions figures and performance, as iat wil save $$ in the long
run.

I have a heap of Sequences in use around my ponds here and they are
trouble free.....
On Thu, 21 Dec 2006 08:26:28 -0500, KurtG
wrote:

George wrote:
If these are large submersibles, you should be aware that they can heat
up significantly at such high head loads. This could cause problems
with maintaining a proper tank temperature.

Good point. I think one of these two will work. I'm leaning towards
the smaller one.

http://tinyurl.com/ygagh8
http://tinyurl.com/ycx8fw

They are both external, so air cooled.

--Kurt



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

Tristan wrote:
The little Giant pump really leaves a lot to be desired

What about this one?


Iwaki MD55RLT
http://www.marinedepot.com/md_viewIt...product=IK1153

KurtG wrote:
Tristan wrote:
The little Giant pump really leaves a lot to be desired

What about this one?


Iwaki MD55RLT
http://www.marinedepot.com/md_viewIt...product=IK1153

http://www.marinedepot.com/md_viewIt...product=IK1173

I may kick it up a notch. This one had a better performance profile. I
know it will work and I can add a second display tank on my 2nd floor.

--Kurt

Coralife Turbo Sea High Pressure Pump
http://www.bigalsonline.com/BigAlsUS...ssurepump1100p
http://www.bigalsonline.com/BigAlsUS...ssurepump1740p


"KurtG" wrote in message
...
KurtG wrote:
Tristan wrote:
The little Giant pump really leaves a lot to be desired

What about this one?


Iwaki MD55RLT
http://www.marinedepot.com/md_viewIt...product=IK1153

http://www.marinedepot.com/md_viewIt...product=IK1173

I may kick it up a notch. This one had a better performance profile. I
know it will work and I can add a second display tank on my 2nd floor.

--Kurt