Contains concentrated fish vitamins and amino acids. Made for all ornamental fish in both, marine and freshwater aquariums. Recommended supplement to frozen foods, which typically don’t contain sufficient amounts of vitamins. Ingredients: vitamins A, B1, B2, B6, B12, C, D3, E, K3, and biotin, alanine, choline, cysteine, glutamine, leucine, lysine, serine, tyrosine. Dosage: one drop per portion of frozen food, or 1 drop / 100L (27 US gal.) directly into the tank. Capacity: bottle of 50ml( 1.7 fl.oz.).