ALGAESTROY 50 1QT

A powerful and concentrated formula of 50% Dimethyl Benzyl Ammonium Chloride that combats all types of algae that grow in swimming pools and spas. Extremely effective, it is safe enough to swim 15 minutes after treatment. Robelle Algaestroy 50 contains no metals so it will not stain surfaces and leaves no residue. 1 Quart