Our Tank has been up and running for about a year now. It is a 55 gal. with 30 gal sump and around 70lbs. of rock, 40 lbs. of sand. 4x55 pc lights, 2-10,000k and two actinic. As far as corals go we have a modern, button coral, frogspawn, hammer, torch, trumpet, orange carnation, two tonga bubbles, rose bubble, purple long tentacle. various mushrooms and polyps. pink ricordia. kenya tree and xenia. As far as fish, purple tang, purple fire fish, two black and white percs, neon goby, red scooter blenny, mandarin goby, lyre tail anthias, diamond goby, orchid dottyback, two cleaner shrimp , two peppermint shrimp, sand sifting star, three small purple maxima clams. Ithink thats about all of it.