HTH Shock is 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 in HTH Shock provides chlorination without adding extra CYA for a beautiful sparkle all season. This pool shock is great for all pool types and won't 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
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