Sorry about your battle with aiptasia, they are persistent, aren’t they?!
I was hoping the Berghias would do the trick for you; I’m considering setting up a tank just to farm them to a large enough number to overwhelm the aiptasia in my tank…
I have a filefish that has no problem going after the aiptasia, but also grazes on the LPS and Zoas as soon as the aiptasia gets sparse, but not eradicated. Even with the filefish fat from eating frozen 2X a day, he still felt the need to pick at the LPS and zoa, ended up having to put him in the fuge. Probably would work well in a dedicated SPS tank.
Aiptasia X will take care of it, temporarily, but it will come right back.
No good answers for the Aiptasia.