Provides bio-available iodine to reef inhabitants for better fish and algae growth, particularly benefits soft corals. Although present in salt mixes, iodine is rapidly used up in the system, and removed by protein skimming andozone. Algae also use iodine. Concentrated Iodine Supplement replaces iodine needed for proper growth and health of invertebrates and algae. Contains a safe, stabilized form of iodine whic h will not destroy system bacteria. Recommended if you use protein skimmers,ozone, or have strong algae growth. Kent Marine was established by aquatic hobbyists who saw a need for products that aid the user in creating the most natural enclosed marine and freshwater environment possible. From vitamin and mineral supplements to nutritional products and filter media, Kent aquarium set the benchmark and was one of the first in the aquatic industry to provide these unique solutions. For the past 15-year, Kent Marine products have helped aquarists create healthy aquariums. Through continuous research, testing and development, new products like salt mix, scrapers and Kent RO filters were brought into the Kent Marine family.