The thing with aiptasia control with the peppermints, or a filefish like I have, is that you have to remember the pest is still there, it's just being consumed enough that you don't see it.

I have a bazillion aiptasia in my overflow and zero in my tank.

I still remember the amazing fiji rock I bought in the beginning. Never had a pest like that ever.

I whenever I get LR go with the understanding that I may get some unwanted things as well as beneficial things. Last rock I got had aiptasia on it killed the visible stuff first with open flame then put in tank and it became my 2 peppermints best friend for about a week.

I also got 2 hitch hikers a pair of porcelain crab as an added bonus from that same rock who have since made themselves right at home in my tank

Maybe it's not normally the case but my peps totally wiped mine out.

Aiptasia x just ticked off my aiptasia in my 400. They spread faster !

I tried to inject them with aiptasia juice for the longest time and then finally got some peppermint shrimp. I had to wait until the fish were out of the tank since the peppermint shrimp would preferentially eat the fish food, not the aiptasia. Once I left them in a 40g full of LR and aiptasia for a month they cleaned it right up.