"Made from an environmentally friendly corn sugar plastic, this completely biodegradable and sustainable pond treatment dispenser will treat 50,000-gallon fresh water ponds and lakes for up to 30 days. Just toss in the water and forget about it. U.S.A. Environmentally Friendly Yes, Compatible With Large ponds, Treatment Capacity gal. 50,000, Includes qty. 1 Sphere, Material Type Biodegradable sphere, Treatment Period Treats up to 30 days."
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