well i have a big ? and my ? is i have right now a fluval fx5 canister filter for my 55gallon tank . i would like to have soft corals but i dont know if i should get a wet dry or a sump and second of all i can drill in my tank cuz i have stuff in side. i dont want to get a wet dry cuz i gonna have to get a over flow box and that can make me have a over flow and have water all over the floor. plz help need some help.