HTH 52038 Swimming Pool Care Green to Blue, Advanced Shock System, 2-Step Swimming Pool Care Solution, 1 Kit

The HTH 2-Step Green to Blue Swimming Pool System is the perfect solution for fighting a severe algae bloom and transforming your swimming pool water from green to blue in just 24 hours. This easy-to-use system includes Pack I, which is a strong algae-fighting pool shock with Cal Hypo, and Pack II, a powerful flocculant that drops particles to the floor for easy vacuuming. The Cal Hypo based formula transforms water from green to blue within 24 hours without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock, giving you a visibly brilliant sparkle. This product is effective for all pool types that can vacuum to waste, making it ideal for vinyl-lined pools that won’t fade liners. For best results, use with HTH 6-Way Test Strips to test and balance your swimming pool water twice weekly. With the HTH 2-Step Green to Blue Swimming Pool System, you’re all clear for a summer full of fun, relaxation, and crystal clear swimming pool water.