Quote Originally Posted by slapshot View Post
Too much light. In nature they are found in very warm waters. The water in the Keys hits 90 in the summer. They also are usually buried in muck. Really they need very little light. Same thing happened to me. I had a great collection for years then added new lights and they were all gone in a few months.
That's interesting, it always seems like my rics and yumas decline in the warmer months. It would be nice to know more about the natural conditions various corals live.