Are these good or bad?

[packagerat]

Are these green things worms? They just started to appear on my live rock. Are they good things?

 

[Innovator]

Fuzzy tips I assume? I believe it is a Neomeris sp. of calcareous algae and is beneficial.

 

[packagerat]

Yea the tips do look fuzzy. I thought the tips were going to be radiole of hopefully a feather duster. Thanks for your help.

 

[weemanpow3]

I got the same thing. They have been in my tank for a while. They come and go. So I think their safe

 

[AndyH5512]

I have them as well, and they come and go. Never had any problems with them.