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Old 10-16-2004, 07:41 PM   #1
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Join Date: Jul 2004
Location: Kansas
Posts: 205
too much circlutaion

Today my cheap filter quit so i want out and bought a Rena rena filstar xP2. I only have a 20 gallon tank and i plan on using this later on a 75 gallon tank. flow rate is 300 gph and waterflow is 160 gph. (not sure what the difference is)

Is there such thing as too much circulation?
Is it ok to turn down the valve on the return nozzle or is it hard on the pump?

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Old 10-16-2004, 08:09 PM   #2
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Join Date: Feb 2004
Location: Crete Illinois
Posts: 656
Not really, unless you are "blowing" your fish and what not around the tank aimlessly. If you have too much current you should be able to cut back on the output of the filter. Most have some sort of flow control on them.

I think you should be OK. I now have 2 600 GPH pumps going in my 125, plus 3 powerheads, and a mechanical filter that filters around 400 GPH, and I got a nice current going through the tank.


125 Gal-35 Gal Wet/Dry-Tetra-Tec PF500 HOB Filter
(3) AuquaClear 301 Powerheads-600 GPH Circulating Pump
Automatic Tempature Controller
5-6 Inch Sand Bed-200+ lbs of LR
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Old 10-17-2004, 12:41 PM   #3
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I have 500 gph on my 20 and it is fine.
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