. I don't know the proper name for what it has but I can tell you that over the years I have had a few develope that problem. There were different causes for the injury but the coral always recovered. If yor water quality is good and you provide plenty of flow to the damaged area, it should repair itself. If you can't seem to keep the area clean with the flow in your tank try fanning it with your hand. This will cause strong water movement over the affected area and blow away any dead tissue :wink: . In severe cases, where the damage kept growing, I had sucess with applying iodine directly to the area. You have to take the coral out of the water of course for that.
alt="">