Can pests run wild in your tank? FYI
Generally one aiptasia is not reason to run in panic or nuke a rock.
Generally, if your tank does not have an oversupply of something a pest likes, it won't multiply that fast. This is important to understand.

Conversely, if something IS multiplying out of all reason, you have a deeper problem than the pest. Your tank is charged with way too much of something. It may be your skimmer is under-performing re your tank size. It may be...