My setup is going to be a reef tank one day but it is starting life as Fish Only (with LR).  It would be nice to have some colour and movement on the LR so I actually don't mind having one fuzzy rock ( for now ) but I don't want it to spread.  
Any thoughts about what it is?   Ideally, if I can figure out what it is, I could find something that would eat it...  Looks tasty enough.  
Thanks for the feedback so far.
Paul.
Hi 
teevee, thanks for the tip about posting images.  
