Aquascape Cold Water Beneficial Bacteria helps to provide clean, clear, and healthy water conditions in water temperatures below 50 degrees Fahrenheit, significantly reducing pond maintenance. Each bottle of Aquascape Beneficial Bacteria is packed full of eight pure strains of concentrated bacteria and is completely safe for fish, plants, pets, and wildlife. Our Beneficial Bacteria will effectively reduce ammonia, nitrite, and waste in the pond, allowing you to spend more time enjoying your water feature and less time maintaining it. The easy-to-use pump top accurately measures 100 gallons of treatment per pump. Our bacteria contains a 1.5 billion CFU per ounce potency, ensuring consistently effective treatment, and the included marigold and vitamin B help to bring out the natural colors of your fish while maintaining proper fish health.