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HTH

HTH 52037R, Pool Care Shock Advanced, 12 Pack

  • Based on 14,820 reviews
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Availability: 20 left in stock
Fulfilled by Essence of Quality ™ (S/N Recorded)
Arrives Tuesday, Oct 27
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Size: 12 Pack


Style: Advanced Shock


Features

  • 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

Description

The HTH 4-in-1 Shock Treatment is a must-have for anyone who wants to keep their pool water crystal clear. This fast-dissolving formula kills bacteria and algae, reduces chlorine odor and irritation, and quickly restores crystal clarity. Its multi-functional shock treatment for weekly use can solve 90% of pool water problems within 24 hours. The Cal Hypo based formula sanitizes without adding cyanuric acid (CYA), preventing overstabilization or chlorine lock. Compatible with all swimming pools, including vinyl-lined pools and saltwater systems, this product is perfect for everyone. Use it with the HTH 6-Way Test Strips to test and balance your swimming pool water twice weekly for the best results. With HTH 4-in-1 Shock Treatment, you'll always stay all clear for cannonballs!

Brand: HTH


Item Weight: 16 ounces


Item Form: Powder


Product Benefits: Prevents Bacteria,Sanitizes,Kills Bacteria


UPC:


Brand Name: HTH


UPC: 073187520371


Number of Packs: 12


Number of Items: 1


Unit Count: 192 Ounce


Item Highlight: Cal Hypo Formula; Prevents Bacteria & Algae; Restores Crystal Clear Water; Shock Treatment; Visibly Brilliant Sparkle


Included Components: HTH 52037 Swimming Pool Care Shock Advanced, Swimming Pool Chemical, Cal Hypo Formula, 12 Count(Pack of 1)


Item Type Name: Swimming Pool Chemical Prevents Bacteria & Algae, Cal Hypo Formula


Manufacturer: Innovative Water Care


Model Number: 52037R


Manufacturer Part Number: 52037R


Manufacturer Warranty Description: Warranty


Item Form: Powder


Product Benefits: Prevents Bacteria,Sanitizes,Kills Bacteria


Item Weight: 16 ounces


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Oct 27

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

    • Keep my pool sparkling clean
Size: 6 Pack Style: Advanced Shock
Review Image by Robin
HTH Shock Advanced is keeping my pool sparkling clean. I have a 24' x 52" above-ground pool, and I typically use one package of HTH Shock Advanced every 2 to 3 days, depending on how much sun and rain we've had. It works quickly to keep the water crystal clear and helps prevent algae and cloudy water, even during the hottest parts of summer. It's simple to use, reliable, and has made maintaining my pool much easier. I highly recommend it to anyone looking for an effective pool shock treatment. ... show more
Reviewed in the United States on July 14, 2026 by Robin
    • Powerful Pool Shock That Works!
Size: 12 Pack Style: Advanced Shock
Review Image by Richard
This HTH pool shock is easy to use and does a great job clearing up the water and keeping the pool fresh. It dissolves quickly and helps tackle chlorine demand, algae, and cloudy water. Great product to keep on hand for regular pool maintenance, especially during the hot summer months. Definitely makes pool care easier! ... show more
Reviewed in the United States on August 22, 2026 by Richard
    • Definitely recommend for Crystal Clearwater, all summer
Size: 12 Pack Style: Advanced Shock
Great product at a fair price ordered back in the spring have used it all summer. It’s now August my Water has stayed crystal clear. I have a 6000 gal pool . I add one chlorine tablet and shock once a week and once a month I add a splash of algacide. And that’s it perfect water all summer I definitely recommend. ... show more
Reviewed in the United States on August 25, 2026 by c wright
    • good for pool owners
Size: 6 Pack Style: Advanced Shock
great to have on hand if you own a pool. value is good, concentration is great
Reviewed in the United States on October 2, 2026 by Molly Gerber
    • Same quality, more affordable than pool stores
Size: 6 Pack Style: Advanced Shock
Good quality equal to those bought at pool specialty stores. Only disappointment is package used to come with more quantity. For whatever reason shipping was limited to only a six pack.
Reviewed in the United States on August 10, 2026 by MS
    • Pool care needs
Size: 12 Pack Style: Advanced Shock
Needed pool maintenance supplies, ordered 12pk, received promptly and no issues with delivery. Good product, easy to use, decent price and keeps pool chemicals stable.
Reviewed in the United States on September 6, 2026 by Carol S
    • Green to clear
Size: 6 Pack Style: Advanced Shock
Review Image by Alisha
I gotta give credit where credits due. I have a small 700 gallon pool and unfortunately I became a little neglectful on some rainy days and I kept noticing no matter what I did the water was staying slightly greenish. I read up on what I might need and came across this product. I was skeptical because on the box it says 1 bag treats over 13,000 gallons of water... well my pool is only 700 gallons. So I ratioed it and it says it would be 1/19th of a bag. Well I guess im slightly laid back I just visually guessed 1/19 and said "that'll do". Well sure enough this morning my water is finally clear! Very happy mama here! ... show more
Reviewed in the United States on August 15, 2026 by Alisha
    • Works great
Size: 6 Pack Style: Advanced Shock
Works better than any of the other shock brands I’ve used. Kept the pool clear longer And cleared the green algae.
Reviewed in the United States on October 3, 2026 by Kayla

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