Title says it, what would be best? I want something that is cheaper, though. UGF is written off unless someone says otherwise. Here is a list of HOB filters for 55s I can find: Power Filter 350 Hang-On Aquarium Power Filter - for 55 Gallon Aquariums Quiet Flow Filter - 90 Gal. Tetra 25775 Whisper Power Filter 60, up to 60-Gallon Tetra 26313 Whisper EX 70 Filter, 45-70-Gallon Rena SmartFilter 55, UP TO 55 Gallons I have also seen Lee's premium UG Filter for 40/55 gal, is this any good?