Crystal Blue Natural Pond Cleaner Gallon 00114Crystal Blue Natural Pond Cleaner consists of safe and natural bacteria that helps maintain pond muck levels, dead leaves, odors and other organic material that can hurt the healthy balance of your pond or lake. Super charges naturally occurring bacteria to consume micronutrients for a healthy, clear pond. 100% safe for humans, fish, livestock, pets, birds, swimming, consumption and irrigation. 1 gallon treats 1 surface acre, 4 to 6 feet deep