Am I the only person who is not using a sump for their tank? I have a 55 gallon FOWLR tank and have a hang on the tank protein skimmer and heater and power heads in the tank and no sump. Is that bad? There is a bit of stuff with teh heater and the skimmer and all crowding the tank. Is the sump more for the visual asthetics as well as being able to get better skimmers in the sump? I am thinking of revamping the tank, would I have to then drill holes in the tank I have or just in the Sump tank down below?