Thanks for the comments. Weird this morning all the stringy stuff was gone and didnt see it this evening either. I am guessing it isnt a huge problem. Will keep an eye on it. By the vid you can see it was clearly (despite any camera movement :biggrin:) in many places on the colony the other day.

As some had mentioned the white stringy stuff is feeder tentacles, I visited a members house that had verified this and sure enough have noticed this on my tank after feeding..... Nothing to worry about!

I noticed that on my one acro frag a couple hours after the moonlights came on.