I am not talking about an enemies anymore anatomies live on mostly food with some photosynthesis you clearly have a very stressed torch coral you need to isolate it in an isolation tank watch your other corals to make sure nothing is happening keep an eye on them I take pictures every week so I can see what is happening or not happening and what I should do to take care of the problem I was in reef tank for about 10 years got smart got rid of it and a lot of stress but now I'm back with total new technologies you are not doing your corals any good doing water changes that far apart you're not making up any Trace elements and are you using rodi water