Alright.. I know this sounds crazy but I have an anemone growing in my tank. I have never had any coral of any sort because I have never had the lighting. I have two clowns and a crab. I just noticed about 3 weeks ago what looks like an anemone that just appeared on a piece of my rock. Only thing I can think of is that I got a few new pieces of live rock recently. HOWEVER, it's growing on the ONLY piece in my tank that is fake! I guess what I wanna know is, is this possible, and if so, I guess it's not going to harm anything?? I'll try and post a picture in a little bit.