Pool Care Shock Ultra, 1 Lb.

HTH Pool Care Shock Ultra 1Lb, Calcium hypochlorite 56%, fast acting, softens water, kills bacteria and algae, enhanced clarification agent, good for all pool surfaces, concentrated formula.

• All in one weekly chlorine boost
• Increases chlorine levels quickly
• Prevents bacteria & algae
• Softens & clarifies water
• Cal Hypo for visibly sparkling water
• Cal Hypo formula prevents chlorine lock