Aquascape Pond Starter Bacteria helps to quickly establish the biological ecosystem for new ponds and spring start-ups, helping to support the nitrogen cycle and provide clean and healthy water conditions. Starting your season right with Pond Starter Bacteria allows you to spend more time enjoying your water feature and less time maintaining it throughout the year. The 1 gallon bottle treats 80,000 gallons of pond water, the 32-ounce bottle treats 20,000 gallons, the 16-ounce bottle treats 10,000 gallons, and the 8-ounce bottle treats 5,000 gallons. Each bottle comes with an easy-to-use pump top that accurately measures treatment per pump (500 gallons per does for the 1 gallon bottle, 100 gallons per dose for other sizes), making treatments easily measured and accurate. Pond Starter Bacteria is completely safe for fish, plants, pets, and wildlife. Aquascape is passionate about the products we produce, providing unique products, designs, and features that stand above the competition.