HTH 52039 Swimming Pool Care Shock - Ultra Cal Hypo Formula for Effective Pool Treatment (1 Pack)

• BENEFIT: Use this all-in-one powerhouse pool shock to increase chlorine levels, prevent bacteria, algae, stain, and scale, reduce skin and eye irritation, improve filtration, and soften your swimming pool water quickly and easily
• VISIBLY BRILLIANT SPARKLE: This Cal Hypo based formula sanitizes without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock
• VISIBLE BLUE ACTION: This built-in feature lets you know the product is working
• 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; Use weekly to solve 90% of pool problems within 24 hours and restore crystal clarity

The HTH All-In-One Shock Treatment is the ultimate solution for keeping your pool water crystal clear and sparkling. This powerhouse product increases chlorine levels, prevents bacteria, algae, stain, and scale, reduces skin and eye irritation, improves filtration, and softens your swimming pool water quickly and easily. Its Cal Hypo based formula sanitizes without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock, creating a visibly brilliant sparkle. The built-in visible blue action lets you know the product is working. It's compatible with all pool types, including vinyl-lined pools and saltwater systems. For best results, use with HTH 6-Way Test Strips to test and balance your pool water twice weekly. Use weekly to solve 90% of pool problems within 24 hours and restore crystal clarity with HTH All-In-One Shock Treatment.