Applied Biochemists Black Algaetrine is a unique, patented blend of algaecides specially formulated to control black algae and other equally resistant strains. Its powerful formula easily penetrates the thick, waxy coating black algae uses for protection, quickly killing it all the way down to its roots, yet contains only 3.07% active copper to avoid any need for water rebalancing.
28 in stock
Now offering Curbside Water Testing by Appointment Only!
Visit us online to schedule your 15-minute water testing consultation.
Simply select your store location and choose from the appointment slots available.
Bring your water test bottle with a sample of your pool or spa water to your scheduled appointment. Please label the test bottle with your name, and drop it off at the water testing counter.
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