HTH 52037 Swimming Pool Shock Advanced, Cal Hypo Formula (12 Pack)

The HTH 4-in-1 Shock Treatment is a pool essential for maintaining clear water. Its fast-dissolving formula kills bacteria and algae, reduces chlorine odor and irritation, and restores crystal clarity quickly. This multi-functional shock treatment can solve 90% of pool water problems within 24 hours when used weekly. The Cal Hypo based formula sanitizes without adding cyanuric acid (CYA), preventing overstabilization or chlorine lock. Compatible with all pools, including vinyl-lined and saltwater systems, this product is ideal for everyone. Pair it with HTH 6-Way Test Strips to test and balance your pool water twice weekly for optimal results. With HTH 4-in-1 Shock Treatment, you're always ready for perfect cannonballs!

Benefits: - Always ready for perfect cannonballs - Fast-dissolving 4-in-1 formula kills bacteria and algae, reduces chlorine odor and irritation, and restores crystal clarity quickly

Features: - Multi-functional shock treatment for weekly use that solves 90% of pool water problems within 24 hours and restores crystal clarity

Visibly Brilliant Sparkle: - Cal Hypo based formula sanitizes without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock

Compatible with all swimming pools: - 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 pool water twice weekly.

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