Also wasn't opening at all not even partially. Tried moving around tank once a week. Nothing would get this guy out.So you killed your coral just to see if flatworms were the reason for it not opening completely? I understand it didnt open for a period but that doesnt mean it was dead or dying. Not to offend you but that logic and thought process is seriously flawed.
Ive killed corals just to make sure rest was safe hell i even done it with fish some wont understand some will although 24 hrs was little long lol but who am i to judge i dipped a colony or red plant few yrs back in hot tap water looking for aefw turned completely white but yet survived some how lol u just never knowIt hadn't opened for 3 weeks believe me I did not really want to do that but thought was sacrifice one to save the rest. Had numerous people tell me get it out of there. New to hobby and going away this week it was lesser of 2 evils. And there is no offending me! Old school american!