JennM;905416 wrote: JDavid - your wrasse may have eaten your shrimp.
SEA gave you a very concise answer. I have seen it happen too, where peppermints are less apt to forage for aiptasia, if they have meaty food "delivered" too often. When they're hungry, they'll go hunting.
You didn't mention how long you've had the shrimp - the aiptasia don't disappear overnight, but given some time, and a bit of hunger, they'll do what you got them to do. I think you were wise to get more than one. With shrimp, I've observed a "mob mentality", especially with peppermints and cleaner shrimp - each for their specific purpose. Peppermints can and will "clean" fish as well, given an opportunity.
I found when working in tanks with multiples of these types of shrimp, sometimes they are shy at first, but if I had my hand in a tank, once one was brave enough to jump onto my hand, the rest soon followed, and I'd get an instant manicure :lol:
I think once at least one of your peppermints decides to have a go at the aiptasia, the rest will follow.
The problem with chemical removal, is that frequently, people irritate the aiptasia just enough, without actually killing it, so that the aiptasia releases its gametes and the next thing you know, there are more to replace the one you may or may not have killed. When using something like Aiptasia-X, you have to coat the aiptasia enough so that if it does release its gametes, they don't get loose in the water column, to settle someplace else and grow new ones.
Be patient - like anything else, change in a reef tank should happen slowly.
Jenn