What are the advantages?
azonic Active Member Feb 22, 2003 #3 On a FOWLR I don't personally see the need of the dual overflow. On a reef tank I could see it being an asset for more turnover of the tank and much more circulation with the second return being there.
On a FOWLR I don't personally see the need of the dual overflow. On a reef tank I could see it being an asset for more turnover of the tank and much more circulation with the second return being there.