HTH® Pool Care Shock Ultra 1 lb

Use this all-in-one powerhouse to quickly and easily increase chlorine levels, prevent bacteria, algae, stain and scale, reduce skin and eye irritation, improve filtration and soften your swimming pool water.

All-in-1 weekly Cal Hypo pool shock
Use weekly to solve 90% of pool water problems
Restores crystal clarity in 24 hours

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.