Reef Plus is a full spectrum reef supplement containing trace elements, vitamins, and amino acids demonstrated to have a positive impact on the growth of corals and other desirable reef creatures. Reef Plus is formulated to provide nutrients available from natural tropical reef waters. Contains vitamin B12, vitamin C, thiamine, inositol, choline, iodide, and other essential constituents. Reef Plus is nitrate/phosphate free. Replenishment of a number of trace elements is required to maintain an environment ideal for the growth and reproduction of marine life, but while the importance of trace elements has been recognized by aquarists for many years, the physiological reasons are not fully understood. The chemical elements in seawater are varied, and, likewise their addition to the aquarium in trace quantities has varied effects on a variety of saltwater plant and invertebrate species. In general, though, these elements are important for metabolic processes and pigment formation. Addition of iron, for instance, has been shown to benefit coloring and growth for corals, anenomes, and other photosynthetic animals. Why It's Different Other manufacturers’ vitamin supplements are incomplete, containing only vitamins and trace minerals. Reef Plus contains necessary amino acids in addition to a full complement of trace minerals and high amounts of vitamin C and B complex vitamins. It is so concentrated that it can be effectively used as a food soak for frozen fish foods. Directions: Use 1 capful (5ml) for each 80L (20 gallons) twice a week or as required to maintain coral growth. May also be used in food by mixing 1ml in about 15ml (1 tablespoon) of food. Refrigerate after opening. Ingredients: ascorbic acid, glutamate, niacin, arginine, lysine, tyrosine, pantothenate, riboflavin, thiamin, choline, inositol, Vitamin B12, potassium bromide, potassium iodide, boric acid, manganese sulfate, sodium molybdate, ferric chloride, copper sulfate, zinc sulfate, cobalt sulfate, rubidium chloride, vanadium sulfate, nickel chloride, stannous chloride Guaranteed Analysis Vitamins & Lipotropic Factors Ascorbic Acid (Vit C) 5.0mg Thiamin (B1) 0.02mg Riboflavin (B2) 0.02mg Niacin (B3) 0.25mg Pantothenate (B5) 0.07mg Vitamin B12 0.9µg Choline (B4)0.004mg Inositol 0.011mg Arginine 0.16mg Glutamate 0.9mg Lysine 0.3mg Tyrosine 0.19mg Minerals Boron 0.096mg Iodine 0.18mg Iron 0.009mg Copper 0.001mg Zinc 0.005mg Manganese 0.062mg Bromide 0.3mg Cobalt 0.004mg Molybdenum 0.016mg Vanadium 0.0003mg Nickel 0.00035mg Tin 0.00029mg Rubidium 0.001mg 2L