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Old 10-11-2013, 01:33 PM   #1
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Sump

I was wondering how many gph does a pump need to circulate a thirty gallon tank with a twenty gallon sump. I have a pvc overflow thay can be adjusted to the dimensions of a pump. But how much power does the pump need to have to cycle the water and serve its purpose of a sump.
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Old 10-11-2013, 01:38 PM   #2
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The more the better, but don't over output your drainage system.
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Old 10-11-2013, 01:54 PM   #3
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Would it be better if I did something along the line of 420gph or something huge like 1300 + gph? Would the 420 be too small because you lose flow rate as you pump water vertically?
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Old 10-11-2013, 02:35 PM   #4
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yes you lose 100 gph per foot.
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Old 10-19-2013, 11:00 PM   #5
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Best thing I ever did was buy a variable speed return pump. I bought a Reef Octopus Diablo DC 3500 it's rated at 950 ish gph on high. It has 6 different speeds and a feed mode. When I was shopping around a feed mode was one thing I wanted on most of my equipment.
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