Peppermint shrimp, some tangs. These methods are sometimes hit and miss though. I personally am not a supporter of paste or chemical methods. These do not seem to work anyway. Gadgets, wands to not work either.
So I'm too new to the hobby to even fathom trying some of the paste or chemical methods! I currently cannot add fish for up to 12 weeks due to what we thought was ich/velvet but turns out it was brook :/ or possibly a mixture of parasites! I want to eliminate the aiptasia while fallow.... I already have a skunk shrimp and a fire shrimp so what would be best fit with what I already have in there? I've read that peppermints(?) Don't get along with some inverts?