Hth 52038 Advanced Green To Blue Chemical, 7.2 Lb, Powder, Chlorine, White

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About This ProductFight a severe algae bloom and transform your swimming pool water from green to blue in 24 hours with this easy-to-use system.Highlights Simple 2-step system Pack I is a strong algae fighting pool shock with cal hypo Pack II is a powerful flocculant that drops particles to floor for easy vacuuming This cal hypo-based formula transforms water from green to blue within 24 hours without adding cyanuric acid to prevent overstabilization or chlorine lock For excellent results, use with HTH® six-way test strips to test and balance your swimming pool water twice weekly Show more