Black Algae Control Concentrate has been specially formulated to prevent and kill the growth of black algae, but is also effective on green and mustard algae. This is the product to turn to for particularly stubborn algae. This potent and effective formula contains no metals. Helps to clear cloudy water for a cleaner, healthier swimming environment.
50% Dimethyl Benzyl Ammonium Chloride.
Dosage with Visible Algae Growth: 16 ounces per 10,000 gallons of pool water. Initial Clean Treatment: 9 ounces per 10,000 gallons of pool water. Maintenance Dosage: 4 ounces per 10,000 gallons of pool water weekly.