Aquascape 98951 Beneficial Bacteria Bubble Tabs for Pond and Water Features, 36-Count Combination of natural cleaners helps to provide clear, healthy water; maintain a strong biological balance in your pond Eight pure strains of concentrated beneficial bacteria; contains marigold and vitamin B Over 500 million CFU per tablet potency, ensuring consistently effective treatment Safe for fish, plants, pets, and wildlife 36 count container treats 3,600 gallons of water