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.
Packaging: Bottle & Bucket
Weight: 2, 10 & 50 lb.
Dosage: Before using Black Algae Destroyer, turn off the pool pump and remove any automatic pool cleaner. Brush algae growth with pool brush then sprinkle Black Algae Destroyer directly over growth using the dosage chart below.