Had a few Aiptasia pop-up on a rock with several feather dusters attached. Didn't wont to lose those dusters. Tried Joe's Juice. Two days later Aiptasia that I thought were gone returned with a vengeance. Now there were more than a dozen. Threw in 4 peppermint shrimp. They went to work within minutes. Aiptasia was gone overnight. it's been 6 months now and I haven't seen a single one raise its ugly head.