Aipetasia has reached plague conditions

[Twinn]

Just my 2 cents but if your problems has already reached plague problems it may be to late to do something like kalk paste as it will affect your water chemistry if you use too much. If you have them overtaking your tank I would lean towards a matted file fish, peppermint shrimp or berghia nudibranchs. Just remember that some of these natural solutions will either look to your coral for food or starve and die when the aipetasia is gone.