Im happy to be a part of this forum site and hope you guys can help me, also to help anyone i can. I have been with my salt water tank for a little of 6 months now and previously fresh water. i have a 56 gallon column tank with 2 bule/green reef chromis, carpenters flasher wrasse, 2 ocellaris clowns, a diamond watchman goby, and currently holding a yellow tang and a hippo tang don't know what im going to do with them probably upgrade my tank in a year or two if i keep them. I also have 2 torch corals, a daisy flower pot, zooanthids, duncan, i have a fluval 406 i believe with a aquamaxx hob skimmer a hydor circulation pump and my light is ocean revive arctic 247 and i have questions about the light what intensity should i have it on and how long should i keep the light on during the day if anyone can help me that would be great thanks :bigsmile: