So my Oscar has been moved from my 10G to the 75G and what a difference. He swims constantly now and seems so much healthier (color etc.) The Pleco has been staying put under the rock but they seem to be loving the new setup. I feel bad for leaving them in the 10G so long (Oscar is 7 inches and Pleco is 6") My next order of business is a canister filter. I hear all kinds of horror stories about flooding and leaks. What's everyone's opinion on Canister filters and what I should be looking at for my 75G. Thanks