Our CBB ate mysis right away but took about a week to start eating aptasia and about a month to get rid of it all. I'm happy to say that our tank is now free of aptasia, unfortunately our CBB has now started to pick on our pom pom xenia, our zoos and a clam
Fortunately there is a big colony of xenia so damage to that has been minimal, and we were able to move our zoo rocks and the clam to our frag section of our sump. The first peppermint shrimp we had ate all the aptasia but after he died we've tried about 10 more peppermint and none of them ate it.