HTH Pool Shock, Cal Hypo Formula | Swimming Pool Care | 1lb | Pack of 2 | Advanced
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Availability:
Only 4 left in stock, order soon!
Arrives
Sunday, Jul 12
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Size: 1 Count (Pack of 2)
Features
- The information below is per-pack only
- BENEFITS: Stay all clear for cannonballs; This fast-dissolving, convenient 4-in-1 formula kills bacteria and algae, reduces chlorine odor and irritation, and quickly restores crystal clarity
- FEATURES: Multi-functional shock treatment for weekly use to solve 90% of pool water problems within 24 hours and restore crystal clarity
- VISIBLY BRILLIANT SPARKLE: This Cal Hypo based formula sanitizes without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock
- COMPATIBLE WITH ALL SWIMMING POOLS: This product is great for all pool types including vinyl-lined pools and saltwater systems
- YOU'RE ALL CLEAR WITH HTH: For best results, use with HTH 6-Way Test Strips to test and balance your swimming pool water twice weekly
Brand: HTH
Item Weight: 2 Pounds
Item Form: Powder
Product Benefits: Sanitizes,Prevents Bacteria,Kills Bacteria
Number of Items: 2
Brand Name: HTH
Number of Items: 2
Unit Count: 32.0 Ounce
Model Number: 52035
Manufacturer Part Number: 52035
Manufacturer: Innovative Water Care
Item Type Name: Swimming Pool Chemical Prevents Bacteria & Algae, Cal Hypo Formula
Item Form: Powder
Product Benefits: Sanitizes,Prevents Bacteria,Kills Bacteria
Item Weight: 2 Pounds
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Jul 12
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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Similar Products
Top Amazon Reviews
Size: 1 Pack
This pool shock works really well! It cleared up the water quickly and helped keep everything clean and balanced. Easy to use and does exactly what it’s supposed to. I’ve noticed a big improvement in water clarity after using it, and it’s been reliable every time. Great value for the price and a must-have for pool maintenance. Highly recommend for anyone looking to keep their pool in great condition!
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Reviewed in the United States on April 9, 2026 by Shelby
Size: 1 Count (Pack of 2)
worked great ! dissolves very quick my pool was dark dream poured one bag in my pool the next day it was completely blue again, comes with a lot of shock more then expected for a great price and removed all algae !
Reviewed in the United States on April 14, 2026 by Susan Irvin
Size: 1 Count (Pack of 2)
Keeps my pool crystal clear and you can’t beat the price!
Reviewed in the United States on May 21, 2026 by Amazon Customer
Size: 1 Pack
Great price for a needed product
Reviewed in the United States on June 11, 2026 by JAMES PARKER
Size: 1 Pack
The best product you can buy if you own a spa. I have used it for years. The only thing that keeps my spa crystal clear.
Reviewed in the United States on May 4, 2026 by theresa
Size: 1 Count (Pack of 2)
I’ve been using HTH Pool Shock for regular pool maintenance, and it has worked really well. It dissolves quickly and helps clear up cloudy water fast, which makes a noticeable difference within a short time after treatment. My pool water has stayed much cleaner and more balanced since I started using it consistently. It’s easy to apply and fits right into my normal cleaning routine without any hassle. Overall, this is a reliable and effective pool shock treatment. Great for keeping water clear, clean, and ready for swimming with minimal effort.
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Reviewed in the United States on April 30, 2026 by Texas Legend
Size: 1 Pack
This is a pure unscented product that can be used for purifying water in your pool or, at the proper dose, water in any container. It is a safe product for the removal of algae or any bacteria or viruses in your water when used at the proper dose. It dissolves quickly and completely and can be used in small amounts according to your needs. This package will treat thousands of gallons of water making it a great value.
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Reviewed in the United States on February 21, 2026 by experienced
Size: 1 Pack
Love this for pools even little pools
Reviewed in the United States on May 10, 2026 by Delate account