I think I know the answer, I just want to make sure before I go messing around in the tank. I have a mushroom colony that has been doing well since it hitchhiked on the live rock I got about 10 months ago. Lately, it has refused to expand and stays shrunken all day. I recently acquired a frag of what I think is a Branching Hammer coral (Euphyllia paranchora) and situated it about 7-8 inches from the mushroom. The mushroom is down current of it. I thought I gave it enough room to avoid the sweeper tentacles. Is the Hammer the culprit?