Hello everyone! Big time noob here jus started my first saltwater tank a little over 3 weeks ago and things going good. Jus worried about a specific piece of live rock I have that has these little branch like things around it and dark patches of grey. I read about Aiptasia and was wondering if this is an early sign of it or not? Appreciate all the help thank you. Sorry for pics best I could do with what I had.







