photo id needed please
 

Unsure of what this is or whether it is good or bad. I think it is some kind of sponge though.

Thanks in advance

http://i150.photobucket.com/albums/s...8/DSC01949.jpg

http://i150.photobucket.com/albums/s...8/DSC01948.jpg

Glenn

I believe they are a type of sponge, I have a lot of them in my reef too. They are easliy pulled off if you don't like them or they become a nuisance. Some of mine turned purple, some greenish and some white. If the stringy parts get too long I just prune them back.
I don't think they are a problem.