Shock Pool Sanitizer - 68% Cal-Hypo Granular for Crystal Clear Water - Defends Against Bacteria, Algae, and Microorganisms - 12 X 1 Pound

In 1982, a husband and wife team founded In The Swim, initially shipping chlorine from the back of their garage and taking orders on their front porch. Over the past 40 years, In The Swim has grown to become one of the country's largest online retailers for pool chemicals, supplies, and equipment.

Thank you for shopping with us! We offer a wide range of products to cater to your pool and spa needs:

Chlorine and Shock: Visit our store to explore our selection of chlorine and shock treatments. Pool Closing: Browse our products for pool closing and winterizing. Spa Kits and Covers: Find the perfect spa kits and covers to keep your hot tub in top condition. Salt Cells: Maintain your salt water pool system with our diverse salt cell options. Filter Cartridges: Replace your pool filter cartridges with our high-quality products. Water Clarifiers: Improve the clarity of your pool water with our effective water clarifiers. Alternative Sanitizers: Explore alternative sanitizing solutions for your pool or spa. Algaecides and Flocculants: Keep algae and other contaminants at bay with our specialized products. Bromine and Water Balancers: Ensure your pool water stays balanced and ready for use. Stain Removers and Cleaners: Maintain the pristine appearance of your pool with our cleaning solutions. Deck Paint and Patch: Refresh the look of your pool deck with our painting and patching products. Hard Wall Pools and Liners: Find the perfect liner or hard wall pool to suit your needs. Solar Covers and Reels: Protect your pool and conserve energy with our solar cover solutions. Opening Kits and Chemicals: Prepare your pool for the upcoming season with our opening kits and chemicals.

Our most popular and versatile pool shock treatment is the In The Swim Calcium Hypochlorite Pool Shock. This shock treatment is essential for spring pool opening and can also be used to provide a quick chlorine boost to your pool water. It effectively kills visible algae blooms, invisible bacteria, and other harmful contaminants that can make your pool water cloudy and unsafe for swimming. Regular chlorination of your pool will help eliminate most pathogenic bacteria, viruses, and microbes, providing the ultimate defense system for your pool.

We offer a variety of other essential pool and spa products to keep your water balanced and your equipment well-maintained. From pH adjusters and alkalinity increasers to algaecides, clarifiers, and calcium hardness boosters, we've got your chemical needs covered. Browse our selection and let us help you achieve the perfect water quality for a safe and enjoyable swimming experience.

product information: