So one of the first coral frags I got was a two head Duncan. Over a few months it grew to 15 heads and was doing very well. All of a sudden it started closing up on me. Slowly over months it closed tighter and tighter. Eventually dying. I was adding coral fairly often but gave it no mind. I recently bought a new two head duncan. It came out and looked happy for about a week. Now it has started closing. Only coming out about half way and getting tighter. All my other mixed coral and parameters are great. I'm beginning to believe there might be a coral in my tank that is letting off something that duncans don't like. A silent war. Any opinions? Or am I crazy. Lol



