Tetra marine flakes 52g are formulated for the specific needs of marine fish containing a blend of marine crustaceans algae and vitamins for a complete balanced dietr as well as providing the correct nutrition for health colour and vitality all tetra marine foods are highly digestible in order to reduce waste production this helps to maintain low nitrate and phosphate levels and reduces the amount of aquarium maintenance neededr tetra marine foods are available in a range of formats