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- Apr 4, 2019
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I had the smaller current usa dc return pump plumbed with 3/4" pipe. I was unhappy with the flow even with the pump maxed out so I just swapped it out with the largest current usa pump. Still using the same 3/4" pipe that splits to 2 return nozzles at my tank. The flow seems to have increased some but I think it should be more. Do you think I would see a big advantage to run 1.25" pipe up and then split to 2x 3/4" returns at the very end? I believe this pump puts out over 3k gal, not sure if that's taking my 6' head into consideration.