Aquascape Cold Beneficial Bacteria helps to provide clean, clear, and healty water temeratires 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 to bring out the natural colours of your fish while maintaining proper fish health. One bottle treats 20,000 gallons of water.