Koral MDT Coral Dip does not contain iodine. It is a prophylactic cleaner, dip and conditioner for use in cleaning new corals, live rock, and empty coral fragging & holding facilities. It will assist in cleaning corals prior to addition into the aquarium. It will also prevent the transfer of unwanted substances into the aquarium. It will assist in acclimating newly fragmented corals and washing new or damaged corals. It is safe for dipping stony and soft corals, sea anemones, mushroom anemones and zoanthids. It is excellent to use to wipe down or to soak holding facilities or old aquariums for re-use (rinse well after use). This product is not a medication or a household cleaner.