I've had a piece of coral in my saltwater tank for a while, and It's always looked very sad. I thought it would eventually work itself out (I know, that was a stupid decision), but it didn't. What's wrong with the coral, and how can I make it look happier? Here's a picture of my tank + fish stocks: 60 Gallon Tank - My Saltwater Tank Sorry for the poor picture quality, the original picture was too big, and I had to resize it. And no, I don't remember on what kind of coral it is.