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

Plus with a U.V. sterilizer you want the water to flow slowly. Most of them
are rated for a "dwell time" of at least 5 seconds. Any faster and the stuff
in the water is not exposed to enough U.V. to do any good. Also you may to
loose the rainbow filter all together. In a tank of less than 100 gallons
like that it is probably overkill anyway. Go with something like a pair of
Emperor 400s you could get two of them online for cheaper than you could get
a new water pump. You could also go with a canister type filter with its own
motor and pump.

If you do decide to replace the water pump (and you are handy with tools,
and wiring) get a bilge/livewell pump from a boat store. They are more
powerful and WAY cheaper than "aquarium pumps". The only down side is that
they usually run off of 12 volts DC so you will need to rig up a ac/dc
converter but it will still be cheaper than getting a new high power
aquarium pump.

Wally
----- Original Message -----
From: <icmykoi at mindspring_com>
To: <nfc at actwin_com>
Sent: Monday, January 28, 2002 11:08 AM
Subject: Re: NFC: Pressure (prolly off-topic. :)


> As a retired firefighter...changing the position of the pump will not
change
> the total fricition lose..rises and falls cancel each other out...bends
and
> restrictions (pipe size, pipe length,and filters) are your problems. Klaus
> is correct...with all the restrictions you describe you might not have any
> water flow. It does matter if your pump pulls or pushes it will not change
> the output. Larger diameter pipe might help...but you are trying to supply
> to many appliances with to little water volume. Instead of trying
different
> hook ups or a larger pump...bring in another truck (pump). Cut down on
> lengths of pipe, increase width of pipes and use a seperate pump for each
> appliance (filter, and UV light). Watch a fire, we never use the same
truck
> (pump) a supply a ladder hose and hand lines. Seldom will you see more
than
> two or three lines off one truck (pump)  If there are six or seven lines
> (returns)...there will be at least three or four trucks pumping (pumpers).
> First try seperate pump..cheapest and easiest way to go.
> ----- Original Message -----
> From: Al G Eaton <sege7_2000 at yahoo_com>
> To: <nfc at actwin_com>
> Sent: Thursday, February 28, 2002 9:06 AM
> Subject: Re: NFC: Pressure (prolly off-topic. :)
>
>
> > You can test your theory by unhooking the filters etc
> > downstream from the pump and hooking up a hose back
> > into the tank and seeing if there is an appreciable
> > increase in flow... the losses through the twists and
> > turns is certainly part of it, but I bet the rainbow
> > filters are actually the bigger restrictor... you may
> > need to look up rainbow and see what pumps they
> > recommend.
> >
> > Klaus
> >
> > --- Joshua Wiegert <JLW at dune_net> wrote:
> > > 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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