My bicolor finally took a couple of small kelp based flakes. He has been picking at my live rock all day. What types of algae (or other organisms) might it be eating off my live rock? Also what about putting some macro algae in the tank? I would preferably like to find some type of a frozen food. Also what kind of luck has anyone had in keeping these fish. I thought, due to research in books and the internet, that they were a moderately difficult fish to keep, but the owner of the LFS told me that they are "difficult" and require extremly good water conditions. Not that I'm worried about my water conditions because they are very good. I'm just curious about other people experience??? Thanks for the suggestions!