Aquascape Pond Starter Bacteria Water Treatment for Pond and Water Features, 8-Ounce | 96013 Quickly establishes biological ecosystem for spring start-up and for new ponds Safe for fish, plants, pets, and wildlife Helps support nitrogen cycle and provide clean and healthy water conditions 8-ounce bottle treats 50,000 gallons of water Easy-to-use pump top; single dose (1 pump) treats 100 gallons