HTH 52030B Swimming Pool Care Shock, Swimming Pool Chlorinator Boosts Chlorine Levels, Cal Hypo Formula, 13.3oz (Pack of 6)

BENEFIT: Shock treat, sanitize, clarify, and help prevent bacteria and algae in your swimming pool water, all with this convenient, easy-to-use product. 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. VISIBLY BRILLIANT SPARKLE: This Cal Hypo based formula sanitizes without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock. COMPATIBLE WITH ALL SWIMMING POOLS: This product is great for all pool types including vinyl-lined pools and saltwater systems. YOU’RE ALL CLEAR WITH HTH: For best results, use with HTH 6-Way Test Strips to test and balance your swimming pool water twice weekly