I recently acquired a red montipora from a friend exactly one week ago and all of the sudden, the tissue appears to be falling off. Within about six hours it is almost all white. All of my water parameters are in line and the only thing I can think of is my lighting may be different and/or stronger than his. I also read about rapid tissue necrosis and didn’t know if that was a possibility either. Not sure how to tell what the causes. I am really stumped here. Any advice is greatly appreciated