I've always kept 2 peppermint in my tank any I never see them eating them but in general after about 2 months after adding them I can't find any nems left the sm ones disappear first then the big ones! I've had 2-3 peperments that didn't seem to eat but overall had great sucess with them
Well my Berghia Nudibrach plan hasn't seem to have any effect on the Aptasia in the aquarium. So I decided that may it needed a little help since I have seen a few more Apstasia sprout up in other location. So I purchase two peppermint shrimp to assist in the battle and within 2 days one of the Aptasia is gone and they are living in peaceful existence with my two Cleaner Shrimp.