GreenClean Liquid Bacteria - 1 Gallon - Beneficial Bacteria for Koi Ponds and Water Features. Safe for Fish, Plants, Pets and Wildlife. Odor free Reduces the need for water changes Creates a stable environment for aquatic life All-natural formulation Treats up to 64,000 gallons Bacteria Highly concentrated Odor free Comprised of 68 strains of beneficial bacterial for faster activation Contains micronutrients and stimulants designed to reduce ammonia, nitrates and phosphates