What is the best external hang on box type filter? I have a 90 gallon tank and I'm tired of laying down good money on canisters that work great for a couple months then **** the bed. So far I have had: Fluval 404, Marineland magnum 350, and Im about to junk Rena Filstar Xp4. Had the fluval 404 first and it lasted 2 years after it broke I said I wouldnt buy another fluval but as it turns out it lasted far longer than the others at only 2 years!! So Im done with canisters and want to go back to the simplicity of the external box. Any suggestions? Also is it better to have 1 big box filter or 2 smaller ones, need to over filter as my fish are messy.