Aquascape PRO Contractor Grade 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. Each bottle of Aquascape PRO Contractor Grade Pond Starter is 25% more concentrated than the consumer equivalent, making it the ideal choice for discriminating pond professionals. Starting your season right will allow you to spend more time enjoying your water feature and less time maintaining it throughout the year. The included measuring cup and dosage guide makes application simple and easy. One bottle treats 96,000 gallons. Pond Starter Bacteria is safe for fish, plants, pets, and wildlife. Aquascape is passionate about ponds, water features and gardening, providing unique products, designs, and features that stand above the competition.