I picked up this Green Moon coral from Sherita several days ago and its been doing great. Fat and the tentacles out all the time. All of a sudden last night I noticed 1/2 of the corals tentacles were retracted and today all of them are. Believe it or not all my years in the hobby this is my 1st flavite LPS. All parameters are in check.

Is it common for them to do this? Everything else in the tank doing awesome as far as LPS. Blastos, Candy Cane and Scuba Steve all look great. Plump as can be.