I'm going to be getting a 55 gallon aquarium with everything included and I wanted to know if I needed to buy a better filter. sorry I don't know exactly what type of filter it is that I will be getting. I do know that it is a hang on back filter that it is brand new and that it has 2 outlets for water. the box says its rated for a 50 to 60 gallon tank but ive read threads about people having 2 of these or a canister filter or a powerhead with a prefilter on it. thanks in advance.