I use Peppermint shrimp almost exclusively. For the last 2 years every time aiptasia pop up I add one or two peppermint shrimp within a week or two all aiptasia are taken care of. Here a peppermint shrimp cost 8 bucks, eventually my Royal Gramma eats the shrimp. In the past I have had peppermint shrimp bother LPS and eat maxi-mini anemones, but because the Royal Gramma is in the tank now they spend very little time out and about. The other issue with shrimp is that the aiptasia are not eradicated, this is probably true with fish that eat aiptasia. Once the fish or aiptasia eathing shrimp is removed aiptasia do begin to pop up again because small pieces of tissue are left to regenerate. Long story short for the money spent versus the headache of aiptasia treatment peppermint shrimp works for me.