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Old 12-28-2011, 09:34 PM   #1
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sump/display tank balance problems

the picture is my exact setup

i still need to get a few more things but thats where im at right now


my problem is that i cant get the return/drain the same. my sump levelness always varies depending on my ball valves position but i cant dial it in to be perfect. the ever so slighest turn of either valve is either too much or too little.

this my first DIY sump build, so bare with me

advise?
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Old 12-28-2011, 09:38 PM   #2
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You shouldn't be restricting your overflow pipe at all. As long as your return pump doesn't pump more GPH than your overflow can handle, there's no need to throttle either back. If anything, throttling down the return would be the only thing if you want to decrease flow through the sump.
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Old 12-28-2011, 10:17 PM   #3
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yea i do feel the pump return into the tank is too much, same with the flow through the sump. so thats why i restricted the drain, help with noise too. than had the sump recirculating a lot to help in filtering since the flow is too high.

i was reading that putting a ball valve on the return is not good. idk?

this pump is noisy because its old. would getting a new lower flow pump be better? or is this pump fine for my tank (flow wise)
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Old 12-28-2011, 10:20 PM   #4
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Putting a ball valve on the return is fine, as long as it's upstream from the pump, not before entering the pump. Putting a valve on the overflow is risky. I'd get a pump that is under your overflow capacity so there's no worry with overflowing... however, you can keep in mind that you'll lose some flow to height... but I would still get equal to or lower than the overflow capability.
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Old 12-28-2011, 10:30 PM   #5
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the overflow/drain pipe is 1" PVC and it seems it out does the return pump in GPH. so thats good right?

and ok so, i can put a 3/4" ball valve on the return up to the tank, and keep the 1/2" off the T in the return right?
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Old 12-28-2011, 10:31 PM   #6
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Yeah, that would work.
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Old 12-28-2011, 10:34 PM   #7
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ok so if i have this straight... than i would be restricting the return... thus the drain would be slower, thus flow through sump is slower...? no harm to the pump correct?
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Old 12-28-2011, 10:36 PM   #8
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Shouldn't be any harm. Some people say it actually extends the life of the pump, though that makes no sense to me at all. I've got a ball valve on my return pump, with it throttled back just a bit.
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Old 12-28-2011, 10:37 PM   #9
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forgot to add, would it be beneficial to take some of the filtered water from the return (1/2 T ball valve) and have it go through the sump again for better filtration? but this mean i would have to play with the ball valves to even the flow right?
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Old 12-29-2011, 06:14 PM   #10
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You can,just have both valves past the 'T' and your good to go.If your worried about noise from the drain into the sump make sure both pipes end under the water level unless your using a filter sock.
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