Aptaisia anemones are a pain to have in your tank. They are pests and could possibly kill your fish. If a fish goes up and rubs against one, it will sting it, possibly killing or severely injuring your fish. They could also sting you, so be careful when removing it. I often see my sixline rubbing up against a rock because it got stung. What you want to do is go out and buy some Joe's Juice. Put a small amount of it in a syringe and inject it softly into the mouth of the anemone. It will give results instantly and is completely reef safe. The best part is you don't need to put it in a quarantine tank! Just make sure to turn off power heads or wave makers!