what worm is this?

[reef tank 2.0]

I have seen two of these worms come out of my overflows. Not sure if there are more of them, but if I see these same two, I can only imagine there are more.

I have bristleworms, but from what I have seen from them, and when I compare it to these things, they are nothing alike. Like I said, they come out of my overflow slits, and crawl around a bit, then right back in they go.

Can anyone tell me what this is and if it's good or bad?

Here is a 13 second video
VID_20170126_220947 by Shawn D, on Flickr

 

[reef tank 2.0]

Any ideas?

 

[mcgyvr]

Looks like a bristleworm from here..

 

[AlSimmons]

Dorvilleidae I believe.

http://www.lionfishlair.com/hitchhikers-guide/

 

[reef tank 2.0]

AlSimmons - that looks exactly like what it is........I will try to get more video or clearer pictures to confirm. But I'm going with a match.

thank you!

 

[Tambarlee]

Looks like a nematode to me...