Keep your pond clear and reduce algae formation without the use of chemicals. These all-natural barley straw pellets safely keep ponds clearer longer. The biological agent in Algo Clear is made from regenerative raw materials and is highly effective at keeping water clear and golden in color. Won’t harm plants, fish or other animals. Allow 1-2 weeks after initial use for water to become clear. A slight clouding of the water at the beginning of the treatment may occur and will subside after a few days. Resealable bag keeps pellets fresh. Each bag treats up to 3,000 gallons. Net weight 3.3 lbs.