Reef Dip contains elemental iodine complexed to a protective slime coat for safely and gently disinfecting corals. It is effective against bacteria, fungus, and protozoans. It may be used prophylactically (without evidence of disease) or to remedy diseased specimens. It is safe to use with both stony and soft corals. It is also safe for anemones and polyps. Reef Dip provides a protective slime coat complex that covers the coral, holding the iodine in contact with the infected site for extended periods of time. In addition, the slime coat prevents infection from re-rentering the site.