Hi everyone, I have a torch in my 15-gallon tank that won't open up. I've had the little guy in my tank for a few months and it's never come out. At the store, it was open and looked very healthy (that's why I picked it) and I acclimated it they I do with all my corals but for some reason, it's not happy. All my other corals are doing just fine and I try to do 15-25% water changes once a week but nothing changes. I've had issues with algae over the last few months, but I finally have that under control. Water quality is good, and none of my other fish bother it (two clowns, a blue Chromis, and a tailspot blenny). I've also moved it a couple of times to test different water flows and light intensity but that doesn't seem to do anything. Please help!!