Made from an environmentally friendly corn sugar plastic, this completely biodegradable and sustainable pond treatment dispenser will treat large fresh water ponds and lakes up to 500,000 gallons for up to 30 days. Just toss it in the water and forget about it. U.S.A. Environmentally Friendly Yes, Material Type Biodegradable sphere, Includes qty. 1 Sphere, Treatment Period Treats up to 30 days, Compatible With Large ponds, Treatment Capacity gal. 500,000.
Healthy Ponds 51115 Aquaspherepro Biodegradable Treats up to 500 000-Gallon - B004BT7IEW