Koenders 30084K Nature's Pond Conditioner, 1 quart (Spring/Summer Treatment) It's a natural and organic way to care for your pond and improves water quality for healthier fish and increased livestock weight gain Promotes a natural eco-system Reduces pond sludge and creates clean, clear and healthy ponds It's an easy, effective and affordable way to enjoy nature 1 Quart treats a 50 x 50 foot pond or 2,500 square feet