Algone Aquarium Water Clarifier and Nitrate Remover, 18 Filter Pouches (3 Packages with 6 per Package)Algone protects and enhances the bio availability of trace elements, assimilates organic and in organic pollutants and toxins, corrects nutrient imbalances, and breaks down carbohydrates, protein, fat, and other water pollutants, and restores biological balance of the aquarium. Safe for fish, plants, algae eaters, snails, coral, live rock, polyps, invertebrates, etc. Algone enhances the environment and promotes a higher dissolved oxygen content in the