Cleaning Water Nature's Way ... Our Nature’s Pond Conditioner is made from a blend of beneficial bacteria, enzymes, plant extracts, and food grade dye that works to consume decaying organic matter and excess nutrients in your pond. Features & Benefits: No Harsh Chemicals Reduces Pond Sludge, Odors, & Nutrients Safe for People, Pets, Livestock, Fish, & Wildlife Improves Water Quality Effective & Affordable How much NPC do you need? 1 Quart / 1 Liter treats very small bodies of water and backyard ponds - an average of 6 feet deep - 60,000 Gallons 1 Gallon / 3.78 Liters treat small bodies of water, up to 1/4 Acre of water - an average of 6 feet deep - 240,000 Gallons 2.5 Gallons / 9.46 Liters treat medium-sized bodies of water, up to 1/2 Acre of water - an average of 6 feet deep - 600,000 Gallons 5 Gallons / 18.9 Liters treats large-sized bodies of water, up to 1.5 Acres of water - an average of 6 feet deep - 1 Million Gallons