Algaedyn, 1qt

ALGAEDYN is a metallic algaecide and bactericide that can prevent the growth of algae and bacteria for up to several weeks depending on the pH level of the pool water.  Silver algaecides are both algaecide and algaestat.  ie, it kills algae and bacteria and also prevents algae and bacteria. ALGAEDYN activates the floor and walls of swimming pools, giving them a residual and continuing algaecidal action. Completely effective against black algae and most other types of algae normally found in swimming pools. ALGAEDYN is odorless and non-foaming at pool concentration and may reduce other chemical usage. ALGAEDYN in its concentrated form can sometimes stain pools, equipment, or clothing.