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 at pH 8.3. Reef Plus is nitrate/phosphate free. DIRECTIONS: Use 1 capful (5 mL) for each 80 L (20 gallons*) twice a week or as required to maintain coral growth. May also be used in food by mixing 1 mL in about 15 mL (1 tablespoon) of food. Refrigerate after opening.