Hello everyone, I believe this is my first coral casualty in my young reefing hobby. This frag has been in the tank for about 5 months, didn't thrive id say and within the last month or so closed up and I haven't seen a single polyp. Now its not looking so healthy, I believe it's on its way out. I've tried moving it around, changing flow, changed lighting without angering the other corals. No pests in the tank, only hitchhikers I've found are 3 micro brittle stars.