it would depend on the type of fish or reef you keep.keepinfish;1002951;1002951 said:How many gph sump do I need for a 210 gallon?
wow_it_esploded;2665531; said:Try to shoot for 7-8x turnover after head losses and curves are factored in.
If you still wanna do canisters, then I would use the overflows for the canisters' intakes and outflows.