please ID this

[gene71495]

I have noticed an outbreak of these small tube like (~1/4 inch) things attached to my live rock. They snap off when I touch then, but they appear hard. I have also found them attached to reef disc on my coral frags. What are they and how do I get rid of them?

Thanks

http://i246.photobucket.com/albums/gg97/genek_bucket/IMG_1472.jpg

[Rhodan]

Looks like tube snails....When you feed your tank do you see "cobweb" looking stuff coming out of them?
Great article:
http://www.reefkeeping.com/issues/2005-01/rs/index.php

[Montreal Ray]

looks like vermetid snails

[Fretfreak13]

Either vermetid snails, or possibly a type of hydroid. Vermetid snails can be irritating to corals because of their webs, but other than that (and how quickly they reproduce as you've already seen) they're harmless. Hydroids on the other hand sting coral and fish, and are considered a pest.

[gene71495]

Hello,

Thank you all for the information.

Gene