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Old 10-04-2011, 08:33 AM   #21
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Many people have a ball valve on their pump to throttle it back if needed. I should have mentioned that as well.

You would still want the pump just over the return... if you are using an overflow style return. If you are using a drilled RR tank then it isn't as important.
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Old 10-04-2011, 08:56 AM   #22
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Quote:
Originally Posted by Smitty
Many people have a ball valve on their pump to throttle it back if needed. I should have mentioned that as well.

You would still want the pump just over the return... if you are using an overflow style return. If you are using a drilled RR tank then it isn't as important.
But then again, I'd rated throttle my return/overflow than risking to damage my pump by limiting it. Some pumps are known to die if their flow is restricted.
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Old 10-04-2011, 09:06 AM   #23
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I DIY ed my overflow. I've been told that you don't have to match pump to overflow. If your pump is rated a little less than your overflow that's ok.

If it's rated over you can throttle it down
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Old 10-04-2011, 11:42 AM   #24
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when you refer to the "return" do you mean the return pump.. so my return pump is 1000lph will my overflow have to be the same.. also what filter media ie sponge bioballs ceramic ring do you guys recomend
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Old 10-04-2011, 11:53 AM   #25
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Originally Posted by craig_will2513
when you refer to the "return" do you mean the return pump.. so my return pump is 1000lph will my overflow have to be the same.. also what filter media ie sponge bioballs ceramic ring do you guys recomend
For me. Yes return is the pump. I think your overflow should be rated slightly higher than your return pump. Something to factor in is what is your pumps flow rate is rated at for how far below your dt you plan on keeping it.

I have no recommendation on bio balls or other bio media.
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Old 10-04-2011, 12:06 PM   #26
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its rated at 1.6m but i dont need anywhere near that much
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Old 10-04-2011, 12:14 PM   #27
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I mean if your sump is 2 feet below your tank what's it rated at LPH at that distance? That's really the flow rate your having to work around.
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Old 10-04-2011, 07:51 PM   #28
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no idea how do i find that out.. the pump says it has a max head height of 1.6 meters. i understand this to mean it will pump at 1000lph to this height
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Old 10-04-2011, 07:56 PM   #29
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mind if i ask whats your make and model of your pump?
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Old 10-04-2011, 08:19 PM   #30
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sunsun its a cheap one i got from ebay from hongkong lol
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