cfsindorf

That's too vague to answer, as some are benign while others are pests. Finally, there are predators that you definitely don't want in your tank.

I believe these are brisle worms from what I can best tell. Look a lot like

http://www.aquapages.info/index3.html

Craig

Here's a link to my ID page, Craig: http://www.melevsreef.com/id/

Yep mine are the good ones. If I ever wanna go fishin I might have to rob my tank one night.