the reviews ive read on the ac110's are brilliant as you know so im gutted i cant get my hands on them !! cheers for all your help youve given me plenty to think about ! much appreciated2 fx 5's would be enough.. you prob wont need them( sponge filters) with 2 canisters.. but the wouldnt hurt either... a couple of sponge filters ... in tandem with hang on back filters is still what I WOULD TRY TO GET... aqueon 55/75 or emperor 400.. might work....good luck ...I am running out of filtration ideas....![]()