In The Swim Sodium Dichlor Chlorine Shock Granules for Sanitizing Swimming Pools – Fast Dissolving, pH Balanced Sanitizer - 56% Available Chlorine, 99% Sodium-Dichlor – 40 Pound
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Availability:
In Stock.
Arrives
Friday, May 8
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Size: 40 Pound
Features
- Versatile: Granular chlorine with the ability to be used in all types of swimming pools, spas, fountains, and water features.
- Powerful Sanitizer: Sodium Dichlor shock removes bacteria, breaks down organic contaminants, and eliminates algae.
- Calcium-Free Formula: Perfect for hard water areaskeeps pool water sparkling clean and crystal clear.
- Stabilized Chlorine: Contains 56% available chlorine for effective, long-lasting sanitation.
- Usage Directions: Add 3 oz. per 10,000 gallons for routine chlorination; use 21 oz. per 10,000 gallons for super chlorination
Brand: In The Swim
Item Weight: 44 Pounds
Item Form: Granular
Product Benefits: Kills Bacteria, Maintains Clean Sanitized Water
UPC:
Brand Name: In The Swim
UPC: 803354120765
Number of Items: 1
Unit Count: 640 Ounce
Model Number: C4045
Manufacturer Part Number: C4045
Manufacturer: In The Swim
Item Form: Granular
Product Benefits: Kills Bacteria, Maintains Clean Sanitized Water
Item Weight: 44 Pounds
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Friday, May 8
This item is non-returnable:
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
Non-returnable. Transportation of this item is subject to hazardous materials regulation
View our full returns policy here.
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Top Amazon Reviews
Size: 40 Pound
After years of paying $40+ for 5lbs of Spa 56 from Leisure Time and being mostly satisfied, I ran into the problem this year of the bleach shortage and could not find the stuff anywhere...which is what forced me to just say what the heck and invest in the most giant tub of granules I could find just to avoid dealing with the shortage. Mind you, a 5lb canister of Spa 56 lasted me around 1 year, so this would last me likely 8 years at least and at $140 that's still a deal. So, I expected this to be bottom barrel stuff considering the price and what I got was a product that works in my hot tub much better than Leisure Time did. I'm using less of this, less often, and getting better results. It lasts longer, and is far more stable. I'm no chemist, or pool/spa professional, but I can tell you that I'm using this less, it smells more like a spa/pool smell and feels better in the water. With Spa 56, if I missed a day late or two from the usual treatment regiment routine, it would cause an unbalance. Spa 56 was very unstable, it seems. I was just so used to using it, I never noticed. If I was 2 days late, usually my tub would start smelling like old socks. I have been 3 days late with this already and the test strips all still read fine. Sure, the chlorine levels were a little low, but I've still got a nice clear water and no smells. Maybe its not the right fit for everyone, so I won't sit here and tell you to stop using what you're using and get a 40 lb tub of this, but if you want to grab a smaller portion and give it a go, you may be pleasantly surprised. Based on the rate I'm using this, I'm looking at a good decade or more off this one bucket.
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Reviewed in the United States on October 24, 2020 by Strike Commando
Size: 5 Pound
Did a lot better job than I thought it would for a lot less than what the Pool store suggested a highly recommend this
Reviewed in the United States on October 18, 2024 by Jason
Size: 40 Pound
item was delivered in good condition .
Reviewed in the United States on April 1, 2025 by Dana Dempsey
Size: 25 Pound
Good product and cheaper than Crystal Pools prices...
Reviewed in the United States on June 24, 2024 by Loretta Emanuel
Size: 25 Pound
Perfect
Reviewed in the United States on March 28, 2025 by Howard Shiff
Size: 2 Pound
I got the product very quickly and will use it on gopher holes with some water. Cover the hole and the gas will drive away the gophers.
Reviewed in the United States on March 2, 2025 by Amazon Customer
Size: 5 Pound
Does it’s job
Reviewed in the United States on November 19, 2024 by Kim staats
Size: 25 Pound
I was looking for bags of chlorine to shock my pool.
Reviewed in the United States on April 16, 2025 by james r wilson