If you have a sump, just temporarily banish your Mantis' while you deal with your infestation

peppermint shrimp ate 25 of mine haha, took him 3 months but he got it done

I'm a little luckier than that, my peppermints lasted a couple of weeks, just long enough to take care of the issue. But just the other day I thought I saw one Aiptasia rearing its ugly head and now I'm torn about whether or not I should get another pepermint and send him to his inevitable death.

+1 for lemon juice and a seringe. I have also put verry salty water in seringe that works too. just make shure you poke right into it than inject
good luck!

I go for the kalk paste and smother method myself.
I seem to go through calcium pretty fast so Ive never had a problem with water chemistry.
Done it in and around hard/soft corals and the softies get ****ed for a bit but come through fine after.