Special formula eliminates tough black and mustard algae. Formula activates floor and pool walls with a residual that continues to fight growth after treatment. Severe algae growth such as black algae is resistant to normal chlorine levels and most liquid algaecides. Black Algae Destroyer is an extremely powerful algaecide and bactericide formulated specially to kill problem algal growth.

Features:

• 1 to 1.5 oz. (28.3 g to 42.5 g) per 1,000 gallons (37.85 m³)
• Jar, Bottle or Pail