Seachem Reef Zooplankton is a concentrated blend of marine zooplankton that contains no added dyes or synthetic pigments. This natural source of carotenoids for colorations provides essential fatty acids, proteins, vitamins and amino acids for coral growth. Unique blend of marine zooplanktonStimulates coral growthProvides important nutrientsContains a natural source of carotenoids for colorationsReef Zooplankton is enhanced to increase the bioavailability of important nutrients, which helps corals expend less energy to derive nutritional benefit. Directions: Shake well before using. Use 5 mL for every 190 L (50 US gallons) of water twice weekly or as required to maintain coral growth. (For reference purposes, the cap holds 5 mL. ) Refrigeration after opening is recommended, but not required. Ingredients: Fenneropenaeus chinensis, Artemia, Rotifer, Protein Hydrolysates with carotenoids, Ascorbic Acid, Citric Acid, Carboxylic Acid, Sodium Benzoate, Methylparaben, Propylparaben. Guaranteed Analysis: Protein (min) - 2. 0% Crude Fat (min) - 0. 35% Crude Fiber (max) - 0. 5% Moisture (max) - 96. 0% Ash (max) - 1. 5%