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In The Swim

In The Swim Chlorine-Free Pool Shock - Quick Dissolving, Fast-Acting, Shock-Oxidizer for Swimming Pools, Spas, and Salt Chlorinated Pools Compatible - 40 Pound Bucket

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Availability: In Stock.
Fulfilled by In The Swim Pool Supplies
Arrives Saturday, Jun 6
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Style: CF Shock


Size: 40 Pound


Features

  • Non-Chlorine Alternative: Use chlorine-free pool shock-oxidizer weekly to eliminate non-living matter, keeping your above ground or in-ground swimming pool water clean and safe
  • Proper Water Balance: Quickly dissolves to provide fast results without raising or altering pH levels
  • Reduce Chlorine Usage: Enhances the effectiveness of the existing chlorine in the pool, reducing the need for extra chlorine in your swimming pool
  • Advantage: Minimizes skin and eye irritation from your swimming pool water
  • Versatile Compatibility: Suitable for standard chlorine, salt chlorinated, mineral, and bromine-treated swimming pools, spas, and hot tubs

Brand: In The Swim


Item Weight: 40 Pounds


Item Form: Granular


Product Benefits: Maintains Clean Sanitized Water


UPC:


Brand Name: In The Swim


UPC: 803354120901


Number of Items: 24


Unit Count: 640 Ounce


Model Number: Y8250


Manufacturer Part Number: Y8250


Manufacturer: In The Swim Discount Pool Supplies


Item Form: Granular


Product Benefits: Maintains Clean Sanitized Water


Item Weight: 40 Pounds


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Jun 6

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Effective product for swim spa
Style: CF Shock Size: 12 X 1 Pound
I’ve been using this weekly in my swim spa for over a year. It’s the best product I’ve used for maintaining a fresh water balance. It has reduced my need for deep cleaning significantly!
Reviewed in the United States on February 28, 2026 by Nanahoney
    • Poor delivery. Great product for pool
Style: CF Shock Size: 6 X 1 Pound
Thankyou for trenching my front yard fedex You looked at damage and drove off.
Reviewed in the United States on March 10, 2026 by C Brinkman
    • crystal clear at a good price
Style: CF Shock Size: 24 x 1 Pound
Clears cloudy water in a day, crystal clear at a good price.
Reviewed in the United States on February 26, 2026 by Amazon Customer
    • Easy-Peasy
Style: CF Shock Size: 12 X 1 Pound
I just started to use this shock. I have an Ionizer and this is the only thing that I use besides that. My pool is an inground, almost 20,000 gallons. I use 2 1# bags about every week to 10 days and that is all I need to keep my pool sparkling. This has been an exceptionally hot year and our pool has very heavy use. I have had no problems with algae or anything else. This is the easiest maintenance routine and the most effective one I've ever had and we have had our pool for over 40 years. I highly recommend this shock and using an ionizer. So much healthier with less chemicals. ... show more
Reviewed in the United States on July 13, 2024 by Shop-arounder
    • Clear Pool and Fast Shipping
Style: CF Shock Size: 12 X 1 Pound
Maintaining a clear and sanitary pool is essential for a pleasant swimming experience, and the In The Swim Chlorine-Free Pool Shock-Oxidizer excels in achieving this goal. This product is specially formulated to eliminate contaminants, organic matter, and bacteria from the pool water, ensuring a safe and inviting environment. By using this pool shock-oxidizer regularly, you can prevent the formation of algae and other unwanted substances that can cloud the water. It helps to oxidize and break down organic compounds, leaving your pool water crystal clear and refreshing. One of the advantages of the In The Swim Chlorine-Free Pool Shock-Oxidizer is its compatibility with chlorine-sensitive individuals and those with sensitive skin. The product is chlorine-free, making it a suitable option for people who may experience skin irritation or have allergies to chlorine. Despite being chlorine-free, it remains highly effective in maintaining water clarity and preventing the growth of bacteria and algae. This makes it a versatile choice for pool owners who prefer a chlorine-free alternative. When it comes to purchasing the In The Swim Chlorine-Free Pool Shock-Oxidizer, the fast shipping provided by Amazon adds to the overall convenience. Amazon's efficient shipping services ensure that your pool shock-oxidizer arrives promptly at your doorstep, allowing you to quickly start maintaining your pool. The convenience of fast shipping saves you time and ensures that you have the necessary products when you need them. Whether you're preparing for a pool party or simply keeping up with regular pool maintenance, the fast shipping from Amazon ensures a seamless and hassle-free experience. In conclusion, In The Swim Chlorine-Free Pool Shock-Oxidizer is a reliable solution for maintaining a clear and clean pool. Its chlorine-free formula makes it suitable for those with chlorine sensitivities, while effectively eliminating contaminants and preventing algae growth. The convenience of fast shipping from Amazon further enhances the overall experience, allowing you to receive your pool shock-oxidizer quickly and efficiently. With the In The Swim Chlorine-Free Pool Shock-Oxidizer and fast shipping, you can enjoy a sparkling pool and worry-free swimming sessions throughout the season. ... show more
Reviewed in the United States on June 22, 2023 by Anthony S
    • Great for removing Chloramines
Style: CF Shock Size: 12 X 1 Pound
Had chloramine build up and using this once a week all summer and every other week the rest of the year took care of it. Water is Christal Clear.
Reviewed in the United States on March 28, 2026 by Az Buyer
    • GOOD VALUE
Style: CF Shock Size: 6 X 1 Pound
WORKS WELL GOOD PRICE
Reviewed in the United States on December 15, 2025 by 14kt gold
    • works well
Style: CF Shock Size: 12 X 1 Pound
cheaper than buying it at the hardware store
Reviewed in the United States on December 24, 2025 by Lawrence

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