Ok so i just got a new saltwater tank....everything is goin good...mostly. So i get some live rock to put in my tank and the guys says to watch out for this stuff that looks cool. well sure enough i got it and i need to get rid of it. Its brown and looks like a coral or anemone but he said it takes over ur tank and multiplys exponentially. I was wondering about the name of it and how to get rid of it. ANY IDEAS?