torch has problems

[bucfan]

I had a reef unsafe hermit crab that had hitchhiked into my tank by being inside a turbo snail's body. Did not realize it till around 3-4 days later. Meantime he had been eating away at my torch. Now one head of my torch is dead with rtn. The other two heads look sickly too. One has lost a bunch of polyps and the third is not opening well. What must I do?

 

[aquabull]

If the polyp with rtn is covered with red jelly looking stuff, the hermit crab may have been just cleaning up a bad situation. Euphyllias are famous for this, especially if it too was a new acquisition.