HTH Pool Care Ultra Granule Shock Treatment 1 lb

HTH Pool Care Shock Ultra 1 lb. (formerly HTH Ultimate Shock Treatment). Use this all-in-one powerhouse to quickly and easily increase chlorine levels, prevent bacteria, algae, stain and scale, reduce skin and sys irritation, improve filtration and soften your swimming pool water. Cal Hypo based formula sanitizes without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock. Visible blue action feature let you know the product is working! Use weekly to solve 90% of pool water problems. Restores crystal clarity in 24 hours. Compatible with all swimming pool types.