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In The Swim

In The Swim Chlorine-Free Pool Shock - 40 Pound Bucket

  • Based on 3,423 reviews
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Availability: In Stock.
Fulfilled by In The Swim Pool Supplies
Arrives Wednesday, Oct 21
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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

Description

Get your pool swim-ready with the In The Swim Chemical Value Kit—a powerful bundle of essentials designed to kick off your season or keep your water balanced all summer long. Keep your pool crystal clear all season with slow-dissolving 3-Inch Chlorine Tablets that deliver powerful, long-lasting sanitization and UV protection—ideal for floaters and feeders. Cal-Hypo perfect for deep-cleaning pools, spas, and hot tubs. Maintain a pristine pool with Super Algaecide—keeping your water safe to swim in right away and gentle on your eyes and nose. Raise total alkalinity and prevent pH swings with In The Swim Alkalinity Increaser. The pure sodium bicarbonate formula keeps water clear, equipment protected, and swimmers comfortable. 3 Inch Chlorine Tablets Cal-Hypo Pool Shock Bromine Tablets 5-in-1 Super Multi-Tabs Di-Zap 3-in-1 Shock

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


Package Size Name: 40 Pound


Number of Items: 24


Unit Count: 640 Ounce


Item Highlight: Quick Dissolving, Fast-Acting, Shock-Oxidizer for Swimming Pools, Spas, and Salt Chlorinated Pools Compatible


Manufacturer: In The Swim Discount Pool Supplies


Model Number: Y8250


Manufacturer Part Number: Y8250


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: Wednesday, Oct 21

This item is non-returnable:

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

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Keeps my pool, nice and blue
Style: CF Shock Size: 24 x 1 Pound
Cheaper than going into the swim stores for sure. The shock really does the job. Keeps my pool, nice and blue.
Reviewed in the United States on August 20, 2026 by Ladybugs
    • Excellent shock for opening or closing pools with vinyl liners.
Style: CF Shock Size: 12 x 1 Pound
I have been using this chlorine free pool shock since I replaced my vinyl liner four seasons ago. I find that it is more suitable for long term care of my liner and pump / filter assembly and works very well for high-dosing during winter closings. It is very effective at keeping the water crystal clear and keeping algae growth to a minimum. I typically apply it via the skimmer and it dissolves before it is recirculated into the pool. It is suitable for any system that typically uses chlorine based shock / tablets. ... show more
Reviewed in the United States on July 3, 2026 by Amazon Customer
    • Good value
Style: CF Shock Size: 12 x 1 Pound
It’s exactly what’s in the box and works!
Reviewed in the United States on September 13, 2026 by Swing2020
    • this worked.
Style: CF Shock Size: 24 x 1 Pound
This was recommended online. once the ph was where it belonged I used this and the pink slime disappeared.
Reviewed in the United States on October 5, 2026 by Nathan
    • Does the job
Style: CF Shock Size: 12 x 1 Pound
Great for price point
Reviewed in the United States on September 18, 2026 by Michelle
    • The right product at the right price.
Style: CF Shock Size: 24 x 1 Pound
Great product to shock your pool when your free chlorine level is off of the chart. Produces sparkling clear water in hours. No chlorine vapor to choke you during application. Just broadcast and go. Fine particulate dissipates quickly and doesn't collect on the pool bottom. I like it, I'd buy it again. ... show more
Reviewed in the United States on October 4, 2026 by Greg D.
    • Exactly as described
Style: CF Shock Size: 6 x 1 Pound
Easy open dosage packages. Great price. Dissolved quickly and did exactly what I expected.
Reviewed in the United States on July 14, 2026 by Lilwolf
    • Great weekly product when chlorine shock not needed
Style: CF Shock Size: 6 x 1 Pound
I love using this in the Summer for a little boost of clean to my above ground pool when a straight bottled chlorine shock isn't needed yet. Keeps it clean, fresh, and clearer but not a shock for algae, bacterial or viral accidents, or when chloramines are too high.
Reviewed in the United States on September 23, 2026 by Karen M.

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