i just decided to look in my tank after the lights went out...i noticed my purple monti cap had dead edges on it earlir today, so i was looking at it and found a white nudi....i pulled it off with tweezers and i am dipping it for an hour or two..i pulled my other monti caps up and checked them for other predators..i didn't see any...this is the only one i have ever seen...i hope this was the only one, but i know that is wishful thinking....this was my first sps coral..i got it with 2 others in one order..they are the only ones that i didn't dip!!!!