This Black Algaecide will control and inhibit the development of Chlorella Pyrenoidosa, Phormidium Inumdatum, Phordium Retzii, Lynoba Versicolor and other swimming pool algae.

The initial dose is 6 oz. per 10,000 gallons of water.
After that, a mere 1.5 ounces per 10,000 gallons of water every 7 days will keep you water algae free.

This algaecide is compatible with most commonly used swimming pool chemicals but should not be mixed with soap or other cleaners, nor pre-mixed with other water treating chemicals.

Please follow the directions carefully.