Help ID

[Ricardo Jaber]

Few weeks ago, I realized that my zoas colonies were starting to loose polyps, I checked parameters and everything was in line. I didnt know what was happening so I just did water changes. The zoas continued to be less and less and with my last inspection, I saw a LOT of worms, white, almost transparent, very thin (1 to 2 millimetres width) and ranging from half and inch to almost 3" the longest. They appear to be coming in pairs from a brown tube, buried in the sand or located in the live rock.
I tried to take pictures but is very difficult. This video that I uploaded to Youtube is the best that I could do.
http://www.youtube.com/watch?v=F9OeyX6uX5o&feature=youtu.be
Can anyone help me ID these worms so I can do something about them? Im loosing all my zoas, very rapidly.
Thanks

 

[vitz]

why do you think the worms and your zoa issue are related?

 

[justthewife]

Those look like spaghetti worms to me and are ok to have in the tank.