So I bought an elegance coral and it wasn't looking so good and I didn't want to kill it so I brought it back to the LPS and they exchanged it for another one it which was doing good for a couple of day and now it's shrunk down and there was brown slime coming out of its wide open mouth all my perameter are good he's got good flow and lighting (18 3w leds) is he going to die should I do a dip or anything else to keep him alive

