I am putting a sump/fuge in my tank. It is a 30g ADHI on a 75 gallon tank. How much gph should be going through the sump, and how do I find out how powerful the return pump should be?
It should match what the tank is draining after head-loss. So if your overflow is rated for 600gph, you want a return pump rated for about 700gph.
-Justin
