I have the correct clean up crew, i have two emerald crabs a peppermint shrimp, 5 or six blue legs and a couple of hermit crabs and 6 turbo snails. i take good care of my tank but i have been away from the hobby for 15 years, that is why i ask questions that i do not know the answers to . Knowledge is what keeps people from killing there fish and corals. Leds are something that we didn't have back then is was all power compacts. I have noticed that the leds are much more colorful.