Farking! I hate this "hobby" sometimes......

[tang daddy]

what kind of clowns are these?

I am sorry to hear this but unless its a designer clown that you spent $250 on I would sump them. I would not let any fish destroy my corals, they are as important to me as my fish. Infact come to think of it I have nems in my sump as a display and thinking I may just add some clowns in............

and if you have the space you could put an anemone in with them so they are forced to host.

1 more thing that came to mind was if they're still going for the chalice you could put the chalice in a perforated tray to bait the fish into going in so you can relocate them.

good luck