BioSafe Systems GreenClean Granular Algaecide - 20 lbs - String Algae Control for Koi Pond, Fountain, Waterfall, Water Features on Contact. EPA Registered.
Brand: BioSafe Systems
Treats up to 40,000 gallons
Non-harmful to fish and aquatic plants when used as directed
Alternative to harsh chemicals – Chlorine, copper and phosphate-free
Begins working on contact - results in 24 to 48 hours
Immediately begins fighting algae blooms, releasing vital oxygen into the water body as it biodegrades