still looking into getting a new filter. mine is getting extra loud i think some sand got sucked up. :evil: so ive been searching around an such for a loing time now on canister filters and ive came across many people who believe 2 smaller canister filters is better then one large one. i have a lightly planted tank at the moment with no large fish. its a 55 gallon with 8 BA tetras, 2 blood fin tetras, 3 black skirts, 2 peppered cories (one died last weekend :-( ) 2 black kuhlis, and 2 angelfish. my filter i have now works good enough to keep my water clear n clean. so on a tank this size would two smaller canisters be overkill an make sense to get one nice large one that will turn my water over 5 times or so an hour?