Aquascape Cold Water Beneficial Bacteria is packed with 8 pure strains of concentrated beneficial bacteria that go to work quickly cleaning and balancing your pond, and works at temperatures below 50F or 10C. Ideal for use in early spring, fall, and winter. 

1 bottle treats 10,000 gallons (37,842 liters)
1 pump treats up to 100 gallons (378 liters)
Contains a 1.5 billion CFU per ounce potency