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In The Swim

In The Swim Pool Shock – 68% Cal-Hypo Granular Sanitizer for Crystal Clear Water – Defends Against Bacteria, Algae, and Microorganisms- 24 X 1 Pound

    • Based on 14,703 reviews
Condition: New
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$119.99 Why this price?
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Availability: In Stock.
Fulfilled by Amazon
Arrives Feb 27 – Mar 1
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Style: Bag


Size: 24 x 1 Pound


Features

  • Fast-Acting Algae Control: Calcium Hypochlorite (Cal-Hypo) is an effective non-stabilized chlorine shock treatment, ideal for routine maintenance in your swimming pool
  • Versatile Use: Suitable for above ground or in-ground swimming pools, spas, and hot tubs; Pre-dissolve or dilute to avoid bleaching the liner
  • High Chlorine Content: 65% available chlorine, provides powerful sanitization for crystal-clear water
  • Easy Application: Pre-dissolve or dilute to avoid bleaching swimming pool liners; Spread granules in the deepest part of the pool; Brush if needed
  • Dosage: Use 1 Pound per 10,000 gallons weekly to maintain 5-10 ppm chlorine levels

Brand: In The Swim


Item Weight: 27 Pounds


Item Form: Granular


Product Benefits: Contaminants


UPC:


Brand: In The Swim


Item Weight: 27 Pounds


Item Form: Granular


Product Benefits: Contaminants


UPC: 792439324788


Unit Count: 384 Ounce


Product Dimensions: 11.3 x 11.3 x 10.4 inches


Item Weight: 27 pounds


Manufacturer: Pool Solutions


Item model number: 25266 2X12X1


Is Discontinued By Manufacturer: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Feb 27 – Mar 1

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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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

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Similar Products

Top Amazon Reviews

    • Excellent product at a more reasonable cost
Style: Bucket Size: 50 Pound
This product is similar to shock sold by the large national chains but it comes at a much better cost.
Reviewed in the United States on November 13, 2024 by J
    • Received as expected!
Style: Bag Size: 24 x 1 Pound
Thanks for the shock! Works great with my outdoor above ground pool!
Reviewed in the United States on December 12, 2024 by D. Williams
    • Cheapest way to Chlorinate and add Calcium
Style: Bag Size: 24 x 1 Pound
As long as you are NOT paying shipping expenses (have Amazon Prime), this is the cheapest way to add chlorine to your pool, AND it adds calcium, AND you are not raising Cyanuric Acid (CYA), which should never exceed "30" for a residential pool. This product WILL also stabilize and raise pH, so you can buy less bicarbonate and reduce pH fluctuation. This product is a NO brainer as the best cheap source of chlorine for ANY pool (unless you do not want to increase water hardness (calcium) ). Stable at a minimum of 65% cholorine for well over 1 year, it does not go bad like liquid chlorine, which loses 1/2% + concentration per month! By the time you buy that liquid chlorine, it has probably already degraded a couple percent. The production date on the liquid chlorine is usually at least 50 days old. Learn to read the production date on liquid chlorine sold at HD or Lowe's and do not buy if it is old. The first digits are the year, the next set of digits is the day of the year. For example, a stamp that begins ...20366 will be December 31, 2020. NEVER toss powdered chemicals into pool unless they are pure chlorine. Powdered chemicals just sink and do who knows what to your pool surface. Always mix first in 5 gal bucket, stir, then add to water. I do this a couple times to fully dissolve the calcium. OF COURSE the water will go cloudy - it is *Calcium* HypoChlorite, but the cloudiness only lasts a short time. Most pools do not have enough calcium hardness - I keep mine well above 400 so I can keep the pH low for better chlorine efficacy. This product also avoids the cost of separately buying a calcium enhancer for the pool. Because it has no stabilizer it will not raise your CYA. Final point : Focus on maintaining LSI. This keeps the water from being corrosive or depositing calcium on the surface. I recommend the free Orenda app. Plus -- unlike liquid chlorine, this does not make the water taste salty, is easy to store, is stable, adds hardness, is cheaper source of Chlorine, does NOT add CYA! Minus -- mixing it up before adding to pool takes a couple minutes you have to be careful to avoid splashing, which will ruin your clothes. You also have to cut the packet with a knife or scissors and avoid spilling any. Highly recommended ... show more
Reviewed in the United States on April 3, 2021 by LJacobs
    • pool shock
Style: Bucket Size: 50 Pound
it's a good product just not as strong as Leslie.
Reviewed in the United States on November 6, 2024 by Sandro I.
    • Great price and quick ship
Style: Bag Size: 24 x 1 Pound
For my jacuzzi
Reviewed in the United States on December 6, 2024 by Gracie
    • Best so far
Style: Bag Size: 24 x 1 Pound
This seems to work better than my last purchased brand
Reviewed in the United States on November 29, 2024 by Blake McMillan
    • Good stuff
Style: Bag Size: 24 x 1 Pound
My pool was starting to get algae and the algaecide I use requires a certain balance of chlorine PPM, and PH to be effective. I only had one bottle of liquid chlorine so I put that in and two pounds of shock, broadcast by hand. two hours later I added two cups of acid. After two more hours I added the algaecide that uses the chlorine in getting rid of the acid. Next morning, no algae and, as the description of the product mentioned, crystal clear water. As for the shock, it dissolved quickly, and unlike other shocks or powdered chlorine, all of it was dissolved and none of it was floating on the surface. ... show more
Reviewed in the United States on September 4, 2024 by JR 44308
    • Great Products
Style: Bag Size: 24 x 1 Pound
I have had no issues with In The Swim products throughout the years.
Reviewed in the United States on January 24, 2025 by NDDuckHunter

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