Peeps, do I REALLY need a sump for my tank? I have a 55 gallon tank, with an aquaclear 110 filter, and I will be using 700gph worth of powerheads on this tank. Should I have a refugium with a plant, or do I have to have a sump? I have heard that sumps are pretty much for convenience. I want to do corals, and I have the proper lighting, but no sump. I guess I could make one for cheap if I had to? But again, do you have to have one? Thanks!!!!!!!!!!!!