Strange worm in my tank? Help

[Nick986]

There is a strange worm type thing in my tank. It is red and has tentacles. Can someone tell me what it is? And is it dangerous or can I leave it in my tank?

 

[downbeach]

Spaghetti or Hair worm maybe.

http://reefkeeping.com/issues/2002-06/rs/

 

[Misled]

What downbeach said. I answered it in your other thread.