Applied Biochemists 406303 Black Algaetrine 1 Quart

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This formulation was specially designed to fight tough black algae. Contains copper and exclusive penetrating agents to kill and prevent the growth of even the most deeply-rooted algae cells. It allows for swimming without waiting, is safe for all pool types and will not discolor the water when used as directed.


Visible Algae Growth:

  • Apply 12 ounces of this product per 10,000 gallons of pool water. Settled algae debris may be removed by vacuuming.

Heavy Algae Growth:

  • First vacuum, clean, and scrub walls. Apply 12 ounces of Black Algaetrine algaecide per 10,000 gallons of pool water. Vacuum to remove algae debris.

Maintenance Dose:

  • (Free of visible algae) Apply 6 ounces of Black Algaetrine algaecide per 10,000 gallons of pool water every 5 to 7 days. NOTE: If high temperatures prevail or pool has unusually heavy use, add maintenance dose more frequently.


  • Combination of algaecides specially formulated for black algae. Contains 3.07% active copper.
More Information
Brand Applied Biochemists
Product Name Black Algaetrine 1 Quart
Manufacturer Part Number 406303
SKU APB-50-8022
Pool Type Above Ground, In Ground, Residential, Commercial, Spa/Hot Tub, Fountain
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