Aquascape Contractor Grade Beneficial Bacteria Concentrate for Ponds helps to provide clean, clear, and healthy water conditions, significantly reducing pond maintenance. Each bottle is 25% more concentrated than the consumer equivalent and is packed full of eight pure strains of concentrated bacteria. Our bacteria will effectively reduce fish waste, organic plant material, sludge, and excess nutrients in ponds and contains a 5 billion CFU per ounce potency, ensuring consistently effective treatment. The included marigold and vitamin B help to bring out the natural colors of your fish while maintaining proper fish health. The included measuring cup and dosage guide make application simple and easy. Each 9-pound container treats up to 672,000 gallons of water. Aquascape Beneficial Bacteria is completely safe for fish, plants, pets, and wildlife.