quietest return pump

[golf nut]

Originally Posted by Canadian

Obviously there are different schools of though on this but I don't see the point in running a return pump at a rate greater than what your skimmer can accommodate. It would be a complete waste of hydro. I'd run the smallest return pump you can to meet your head loss needs to keep up with your skimmer and only use propeller pumps for flow in the display and even one in the sump to keep detritus from collecting.

Perfect

At least somebody understands what is required for a sump return.

If you ask a reputable skimmer mfg they will tell you to use a sump pump of the same value as the skimmers capacity, ie if you purchase a skimmer for a 400 gallon system it performs at its best at 400 gph passing across it, any more and its performance will be depleted. The 10 times turnover rate isn't correct if the tank is skimmed properly.