Epitonium snails killing colonys. Need help.

[Salty Cracker]

I had some new zoa frags shipped in a couple weeks ago. A couple days I noticed that my really big colony was missing a bunch of polops. My buddy suggested it was one of these snails. What's the best way rid this little bastards.

[650-IS350]

This one?
http://www.divegallery.com/snail_epitonium.htm

Only snail I won't trust anymore around my Z's and P's are Chiton's. watched one just much on polyps on a frag disk, literally cleaned it to the frag disk surface.

[Salty Cracker]

Not the snail. I'm thinking I have a snail that is super tiny. I have a huge colony of eagle eye zoa's. Had and easy 300 polyps. In four days I'm down to a third of of polyps. I have tried dipping it, a fresh water dip. I have not seen what it is. There are time I see the Zoa's all close up and release toxin, and you can see the polyps move like someone walkingbthrough a tall field.

[650-IS350]

brown strings?

what fish do you have?

[kichimark]

That is a lot of zoas to have missing in that amount of time. I am betting it is a fish.