Help me ID these little bugs please

I will attach 2 photo's that are in my album. These bugs seems to have been intorduced to my new system via a batch of Cualerpa. Hopefully they are the god kind. Please advise:

Number 1:
http://www.3reef.com/cgi-bin/album.pl?photo=aseidman00/Bug1.jpg

Number2:
http://www.3reef.com/cgi-bin/album.pl?photo=aseidman00/Bug2.jpg

The photo os the second guy is not as good as the first.. but hopefully its enough to give you want you need to advise. The second one looks like a centerpede (I suspect I spelled that wrong.. oh well).

Thanks for any help you can provide.

Allen

 

I think what you have there is a bristle worm?

Anybody else have an idea

And yes they are good for your system

 

I second that notion....bristleworms

 

Although I have very limited experience I am not sure it is a bristle worm. Its not very long(1/2 inch) and its a little chubby. Bristle worm photos I've seen make them look longer and they typically have a dark line running down their backs. This guy is all pinky....

Any more ideas out there or is this really a bristle worm ?

And did you say that they are good ? Then why so many devices sold to catch them ?

 

both of them ??? bristle worms ?

 

Yup, both worms. Their appearance can vary but they are clearly both bristleworms.

Traps are sold for only 2 reasons that I can think of (1) some folks still seem to think that they're bad in a reef tank which they are not (2) some people overfeed their tanks which results in a bristleworm explosion which becomes unsightly.

 

aseidman00 check out this link

http://www.reefkeeping.com/issues/2003-03/rs/