HTH Pool Care 5.5 Lb. Shock Treatment Granule

The original swimming pool shock designed to boost chlorine levels and kill bacteria and algae for a clean, clear pool. Traditional chlorine products contain cyanuric acid (CYA). When too much CYA builds up, it can cause overstabilization or chlorine lock, and cloud your water. The fast-acting, fast-dissolving Cal Hypo based formula provides chlorination without adding extra CYA for a beautiful sparkle all season. This pool shock is great for all pool types and will not fade your pool liner.

Features:

• Multi-use pool shock with Cal Hypo
• Use weekly to solve 90% of pool water problems within 24 hours
• Fast acting and fast dissolving Great for all pool types including vinyl-lined pools and salt water systems
• Kills bacteria and algae
• Fast acting and fast dissolving
• Ideal for vinyl lined pools