Damage control

[trinac]

My brain coral was experiencing the same thing recently (Lobo sp.). I had some advice to try moving it to a new location within the tank, or closer to the light. I moved it to a new location, also in the sand not upwards to reduce number of variables. And, after a week or so, its looking pretty happy. The other advice I was given was to check KH, Mg and Ca. My KH was on the low side so I brought that up too. Good luck!