I have had mine for about 2 years now. I don't feed anything special but I feed my corals often and I have very fat fish which means I haves lots of stuff in my water which is why I think it has done so well. I had talked to someone at MACNA about these guys, I think it was the guy at the DT's booth, anyway they said that they are possible to keep long term you just have to have plenty of nutrients in your water in order to do so. They filter feed only. IMO there better off in the wild most of them die and I don't think I would have gotten mine if I knew what I know now about responsible reef keeping.