ID please

[cody2cannon]

 

[cloak]

Vermetid snail shells and some small feather dusters as well.

http://www.reefkeeping.com/issues/2005-01/rs/index.php

http://reefkeeping.com/issues/2003-05/rs/

 

[Lovemycj7]

That's pretty cool it looks like a turd

 

[cody2cannon]

Vermetid snail shells and some small feather dusters as well.

http://www.reefkeeping.com/issues/2005-01/rs/index.php

http://reefkeeping.com/issues/2003-05/rs/

So are either an issue? I haven't seen any new ones. I have had these rocks for 3 weeks

 

[Lovemycj7]

I've had these doesn't bother anything in my tank