So I have a 12 gallon nano with a torch coral, a hammer, and a zoa. The coral have all been there for a little over a year. I think we recently (in the last few weeks), lost our blenny, haven't seen him in a few weeks, and we had an algae spike. Our CUC also died a while back and we just got around to replacing them. A few days ago we added six trochus snails and an emerald crab. The inverts seem to be doing well and are chowing down. This morning one of my torch corals is closed down and has a central stalk with long white tentacles coming out of it. I have never seen it do this before, either at night or during the day. It was originally one organism that has since split and has three separate stalks. Is it a feeding tentacle? Is it just no longer happy being that close to its tankmates? Should I move it? Sorry I don't have any tank readings, I just saw this happen and it freaked me out. Thanks in advance! 
