Swim Pool Shock - 68% Cal-Hypo Granular Sanitizer for Crystal Clear Water

In 1982, a husband and wife team founded In The Swim, a company that has since become one of the country's largest online retailers for pool chemicals, supplies, and equipment. Starting with shipping chlorine from the back of their garage and taking orders on their front porch, they had a vision that their business could grow into something significant.

Fast forward 40 years, and In The Swim continues to provide a wide range of products to meet the needs of pool owners. From opening kits and chemicals to solar covers and reels, chlorine and shock, water clarifiers, alternative sanitizers, algaecides and clarifiers, bromine and water stabilizers, stain removers and cleaners, deck paint and patch, paint and primer, spa covers and chemicals, leaf nets and chemicals, and closing kits and winter covers, In The Swim has you covered.

One of the company's most popular and versatile products is the In The Swim Calcium Hypochlorite Pool Shock. This powerful chlorine shock treatment is essential for spring pool opening and can also be used to give your pool a quick chlorine boost. It's designed to kill visible algae blooms and invisible bacteria, which could cause illness to swimmers. Daily chlorination of the pool will kill most pathogenic bacteria, viruses, and microbes, ensuring your pool is equipped with the ultimate defense system.

In addition to the pool shock, In The Swim offers a wide range of other pool chemicals and accessories to help you maintain a balanced and healthy pool. These include 3-inch chlorine tablets, alkalinity increaser, pH increaser, pH reducer, super algaecide, algaecide 60, super clarifier, calcium hardness plus, and stabilizer/conditioner.

With over 14,000 customer reviews averaging 4.6 out of 5 stars, In The Swim's products have proven to be reliable and effective. Whether you're looking to maintain your pool's chemistry, prevent algae growth, or enhance your pool's filtration, In The Swim has the solutions you need. Shop with confidence and enjoy your pool all season long.

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