BLACK ALGAECIDE 1QT

Specially formulated to prevent and kill the growth of black algae, but is also effective on green and mustard algae. Black algae are known to be particularly stubborn; often resistant to standard algae removal chemicals. This is the product (11.8% Chelated Copper) to turn to when no other product will work. This potent and effective formula contains no metals, so it won’t stain surfaces and is non-foaming. 1 quart