Healthy Ponds 11004 Natural Blast Pond Water Cleaner, 12 Water Soluble Packets; Each Packet Treats up to 125,000 Gallons for 7-10 Days For treating seasonal spikes in your pond's nutrient level due to hot weather, excessive runoff, etc Beneficial bacteria accelerate the decomposition of organic matter Best used in conjunction with the healthy ponds aquaspherepro, floating lily, or submersible dispenser 3.17 Pound box of 12 water soluble packets; non toxic Includes 12 pre-measured, easy-to-dispense water soluble packets