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Re: NFC: RE: Pressure (prolly off-topic. :)

Hi Joshua
do as you say, and, if you can take the filter and
sterilizer out of the line and put a small separate
pump on them on their own separate loop. You should
see a major difference.
--- Charles & Catherine Thomas
<ctscuba at aquaticworlds_com> wrote:
> Joshua,
>   I think moving the pump is a good first step and
> then you can evaluate
> from there.  It won't be the 'flow' moving the water
> but the pressure
> resulting from the height (weight) of the water (in
> the tank) pushing down
> to the pump.  This will help the pump but of course,
> any turns, risers, and
> even the diameter of the pipe itself restricts the
> flow through friction
> loss.  Moving the pump under the tank and easing the
> 90 degree bends to 45
> degrees or less will help too.  Your pumps rating of
> 2400 gph is probably at
> zero head.  Every foot of run, every 90 degree bend
> adds a foot of head, and
> every 45 degree bend a half a foot (I think those
> numbers are right).  It's
> easy to end up with a trickle.  If you can use new,
> wider pipe or even some
> flexible pipe to reduce the friction loss you'll be
> ahead of the game.  Just
> remembered too...your pump may be tired.   A new one
> might also be in your
> future, but certainly try a) moving the pump and
> reconnecting or b)
> replacing pipe as cheaper alternatives to a new
> pump.
> Good luck, Charles
> -----Original Message-----
> From: owner-nfc at actwin_com
> [mailto:owner-nfc at actwin_com]On Behalf Of Joshua
> Wiegert
> Sent: Wednesday, February 27, 2002 9:11 PM
> To: nfc at actwin_com
> Subject: NFC: Pressure (prolly off-topic. :)
> Hey all.
> I've got a 92G Corner tank, with an overflow system.
>  I've got a massive
> pump on it, which, at the output end, just doesn't
> seem to give much flow.
> It is rated at 2400 GPH.  I'd guess it is putting
> out less than 100 GPH.
> The impeller is clean, etc. etc.  The trouble is...
> the way the former owner
> set this tank up, the pump comes immediately after a
> sump, and then must
> push water thru a Rainbow LifeGuard MechaniFilter,
> and a UV Steriliser.
> Worse, it pumps up about 4", then back, then drops
> down, thru the
> mechanifilter, up again (8"), left to the UV, up the
> UV (18"), right out of
> the UV, and finally up the tank again.  All these
> bends, turns, rises and
> falls are eating up my head pressure, and thus
> dropping my flow to next to
> nil.
> Now, my question is this:  If I move the pump to
> directly under the tank, so
> the bends, rises, falls, etc. are all before the
> pump (and, thus, more or
> less powered by the natural flow of water, I think?)
> would this give me
> increased flow?  Obviously, when I rework this in a
> few days, I'm going to
> try to minimise the twists, turns, rises, and falls,
> but ... I'm wondering
> where the best place to put the pump is.
> Joshua.
> end
>   ____^__
> ><,Darwin,>
> Joshua L. Wiegert
> NFC Lists Administrator                         
> JLW at dune_net
> www.geocities.com/Josh_Wiegert                  
> owner-nfc at actwin_com
> www.dcpondcare.com                              
> pondcare at dcpondcare_com
> ICQ Unavailable For Now                          AIM
> UID: JoshuaWiegert
> Feel free to contact me by any of the above means
> for any reason.
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