Here is my original post (http://www.aquariacentral.com/forums/showthread.php?261179-Questions-concerning) about my tank set-up. I'm looking for a canister filter for my 20gallon high, anything with good filtration for this tank as I have it a little overstocked (as per "inch per gallon" rule). That is, only when the albino bushy reaches his 5 to 6 inch max size (hoping to upgrade to a 40 breeder by then). I'm looking for a filter for around 50 bucks with shipping.