Description: Start-up Kit for reef aquariums Type: Saltwater Liquids Available In: N/A Part Numbers: RSK Contains: • Iodine (4oz) For proper growth and health of invertebrates and algae • Strontium & Molybdenum (4oz) Corals will open more and stay attached to their skeletons better • Liquid Calcium (4oz) Provides bio-available calcium for healthier, more beautiful corals See products page for more information.