Well they may not be the worst but they sure know how to reproduce some quick.

I have them Also. Copperband does nip at them
Keeping in check.

Here's a good read on them. Basically you have to manually remove them

http://reefkeeping.com/issues/2005-01/rs/index.php

Yeah I read this and I also found some other info saying that Halloween hermits may eat them as well as peppermint shrimp? Anyone that can back this up?
Also if I was to buy a copper band should I worry much about my yellow tang fightin with it?

hmmm.....see, you learn something new every day.....I didnt realize the little red ones were snails too.....I thought they were some kind of tube worm

Originally I thought them to be a hydroids of some
Sort

Yup better bust out the flame thrower and torch your rock to get rid of those pesky vermetid snails... because... because... they reproduce too much and you don't like they way they look? Why not just cover them up with some nice attractive looking coral? Me and my crazy ideas. :mrgreen:

Peppermint shrimp will go elbows deep to eat the little suckers :)

i read this somewhere as well. maybe i will try them tomorrow