Applied Biochemists Black Algaetrine 106 eliminating the need for measuring

eliminating the need for measuring and lasting 2-4 weeks

this product is made by Jack's Magic

Longer service intervals: Higher dirt-holding capacity means you can go longer between cleanings

The Step Stuff's three-step formula is easily applied by adding to the water above the steps

Applied Biochemists Black Algaetrine 106 eliminating the need for measuringApplied 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. Best of all, Black Algaetrine is made by Applied Biochemists, a