I have had 2 of mine for well over a year - one of those for over 2 years. I had one lose its crown once, but it grew back and looks better and fuller than the first one. They will (in my experience) do better in a dirtier tank, like that with mostly LPS. They are filter feeders, so when you feed you corals, they will munch on that. phyto., DTs oyster eggs, cyclopeeze, etc.