GreenClean pH DOWN Granular - 1 lb - pH Adjuster for Koi Ponds and Water Features. Safe for Fish, Plants, Pets and Wildlife. Encourages healthier aquatic life Stabilizes pond ecosystems Promotes aquatic plant growth Enhances beneficial bacteria seeding Treats up tp 8,000 gallons Greenclean pH down ph adjuster Can be used daily to keep water balanced Encourages healthier aquatic life and plant growth; safe for fish and delicate aquatic plants Enhances the water's appearance with a natural blue tint Measures 10.75-inch width by 11.5-inch height by 17-inch depth