Waterwell Black Out 1.5 L

Black Out Is A Highly Concentrated Algaecide For Treatment Against Stubborn Green Black Or Mustard Algae. Black Green Out Is A Highly Effective Fast Acting Algaecide For Treating Green Algae. Algae Appear When A Pool Has Been Neglected Inefficient Filtration And Circulation. Ph Testing And/Or Chlorine Levels Have Not Been Maintained Regularly Spot Algae Appear When A Pool Has Been Neglected I.E. Inefficient Filtration And Circulation Ph Testing And / Or Chlorine Levels Have Not Been Maintained Regularly.