I feed them SA Hatchery Diet. I used to feed it reefroids but I found that it liked the Hatchery Diet better and looked better afterwards. I feed it daily as I have been for the past 4 months or so. No other corals look bad.What did you feed it, and how often are you feeding? Any other corals showing issues?
My guess is it will be fine in the morning and is just digesting the food. Especially given the other heads look fine.