Identification please

[oceanlife83]

I came home and found this coming from a live rock last night. Not sure what it is can anyone identify ?

 

[Rendos]

Bristle worm?.

 

[Whiterabbitrage]

Yeah looks like Bristleworm. Cool.

 

[oceanlife83]

Is it a good thing or bad thing?

 

[nck1992]

http://www.reefcentral.com/forums/showthread.php?t=2304714

 

[Xrod]

Good until it gets too big maybe more than 2 inches but then again depends of the stock you have