VERMITID SNAILS

[Reef23]

Hi all,
I have a few vermitid snails that have started showing up on my live rock. They are releasing the webs onto my zoas and causing them not to open. I am moving tanks in the next few weeks and was wondering what I can do to the rock to get rid of these guys will transfering rock to the new tank. Most of the rock they are on are covered with zoas or palys so need to do something that wont damage them if possible. Thanks