sma;814398; said:Do HOB filters fit on a acrylic top? and what is the GPH on the fluval 303?
it depends on if it has cut outs or not. the majority of acrylic tanks have a 2.5-4" lip depending on gallons of the tank. if it has a cut out then it will work. i think the GPH of the 303 is around like 210 or something. not for sure tho!!