If you plan on upgrading tanks you would need to break the colonies off the rocks and put the in QT for at least 3 weeks. You need to make sure to break off every piece of your SPS from the rocks otherwise the red bugs will survive on the parts that are encrusted. I would then do a Bayer dip once a week, three times total, to make sure all the red bugs and their eggs are killed. I honestly forget how long you would need to let the DT fallow in order to make sure the rock is free from red bugs, hopefully someone else can chime in. Otherwise with interceptor you need to have 3 doses in order to do it once a week for three weeks. How big is your tank? If one pill can cover 3 treatments for your tank I can give you one that was just given to me. Let me know.