This showed up on the bottom of the tank. Right now it's the siZe of a zoa polyp but it was smaller when I first noticed it. From what I can see it kind of like an acan. I have not added any coral for a while nor did I add any live rock. I have added a few emerald crabs. It's quite pretty and we'll see what it turns out to be. BTW I do not have any acan in the DT.
