Currently have a Seachem 75 HOB which I honestly am not super thrilled with--it seems most of the flow goes through the upper skimmer part and very little through the bottom intake tube (i.e when I sprinkled flakes on the surface it went through the top skimmer and then shot through the filter back into the tank)...would a canister filter be an easy/big upgrade?? was considering a fluval 307...my current tank is a 36 gallon bow front with 5 fish (FOWLR)
