There are different types of pyramids if you have that many and there are none on your clam I would expect they will leave it alone . If you want to keep everything it happens to get a taste for sit up a qt and move everything they go after into qt, and treat the display like you would ich. The only problem is I'm not sure the of the length of the life cycle. I have read anywhere from 8 months to 2 years.
I've heard of some fish that "may" snack on them, but I don't think it's a definite, and you can't be sure they will get them all even if they do. Similar to the peppermint shrimp apitasia relation.
Good luck with your battle!!!