You might also want to buy or borrow a Copperband Butterflyfish. Some are hit and miss with Aiptasia, but mine loves it. He continuously hunts for it in my display. You need to make sure that it is eating and has an appetite for Aiptasia. On a bad note, mine also devoured most of my Featherdusters and Spaghetti worms. Apart from this, I find them quite reef safe. If I had to do it all over again though, I would just borrow one from a a fellow reefer for immediate Aiptasia control and then just get a handful of Peppermints as a continued control measure. HTH