I have 96 watts of t5 over my 29 gallon tank. I need to keep my more light sensetive corals like acans at the bottom. I also have one SPS that is ecrusting very fast near the top. Also a clam that has grown noticably in the past year. I would say that you would be able to keep anything. I want to try a nem, but am afraid since the tank size is so small.