Flreefer said:If that is a Carnation coral, they are a notoriously hard coral to keep, so it's possible lighting isn't even the main issue, but I believe they are a low light species, and giving it more light will only make it worse. If your LFS had it under brighter lights, they started the bleaching, even though it still may have looked decent, it could have already been in a state of decline. IMO I would lower it and check all parameters, you'll need great water quality If that is of course a Carnation.