ID help if possible

S

sbrawley

Guest
I know this is going to broad, but I really don't know how to describe it.
A couple of weeks after I started cycling my tank, I noticed something on a piece of my live rock. It was the color of my rock and the only reason I noticed it was because it either moved on its own, or it caught a current from my powerhead. Over the month of cycling I have been keeping my eye on it and it has grown to about the size of my thumbnail. As I said it is the color of my rock, and the best I can describe it is like a weathered sail off of a boat. I'm not sure if it's moving on its own or if its catching a current. I've tried taking a picture, but its too small and blends in to the rock really well.
http://s203.photobucket.com/albums/aa278/shawnbse/?action=view&current=2e6fabe5-1.jpg

Should I be concerned? or let it grow so that it may be identified at a later date?
 
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