I'm shocked aiptasia are as hard to control for the masses, they're quite easy to control but the injections/gluing and animals-in-response still holds out as the top control method (which doesn't work for the masses it works for the lucky)
Why aiptasia has never been an issue for me, and isn't an issue in most pico reefs if we search the million threads on them: pico reefers aren't frozen in fear like large tankers are/it's due to training.
large reefers who buy a rock or a frag and get an aiptasia are literally trained to sit right there and watch them divide, only permitted incremental actions with ultimate fear understanding that one wrong move and you have 20 aiptasias
so they glue, boil, inject, buy, and the divisions never stop and the numbers increase or the keeper just sits there doing nothing the entire time (the sum takeaway from all aiptasia help threads in forums)
but if a pico reefer had an aiptasia on the side of their main rock stack, they'd go get wirecutters and simply cut that attachment point right off/the rock has a small scar on it now but no anemone tissue/ and 1 aiptasia was just eliminated permanently free, without hesitation.
I've seen pico reefers who weren't playing around shove a flathead screw driver into a recessed aiptasia in a rock hole, bore out about an inch up under and all around that anemone via sheer force of will, (real live rock is not that hard to score with steel tools) rinse out the divot, and have no aiptasias in that spot ever again.
The hardest part about aiptasia controls is getting the large tank owner to simply act on aip #1, they'll sit right there and watch it divide with no end in sight. when we can prompt them to lift out a rock, set on the counter, do mansurgery on it, aiptasias are gone in one pass. they're a non issue for pico reefers bc we don't permit them. I will shank an aiptasia into compliance.