dying coral

OK maybe if I post this question here I might get more response.
We have a lobo brain in our tank which seems to be dying. I thought that it may be tissue necrosis or may have gotten damaged when we combined tanks. Anyway I dipped it in the Tectra D by Kent but it does not seem to have worked. One by one each ridge on its skeleton is starting to show. Is there anything we can do to save this coral?
 
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