What the heck is this?
 

The video is a bit out of focus but you get the idea. I pulled this thing out of the main tank, I was moving some sand and there he was. He is in the sump now. Looks like something from the X-files.

http://i134.photobucket.com/albums/q...h_MVI_3731.jpg

It looks to me like a peanut worm.

i agree with marie. peanut worm. harmless (if odd looking) little guy. eats a little bit of organic matter from the sand.

Ok thanks guys, good to know he's harmless.