9.4Our score 4 photosStay all clear for cannonballs; This fast-dissolving, convenient 4-in-1 formula kills bacteria and algae, reduces chlorine odor and irritati
Ranked #99 in Garden & Patio · 4 things we like
Quick answer The HTH 52036R scores 9.4/10 with us. Amazon owners rate it 4.7 out of 5 across 14,678 reviews, above the 4.4 average of the 35 chlorine we track. It was listed from $29.97 to $92.36 on Amazon depending on the option when we last checked in September 2026.
The HTH 4-in-1 Shock Treatment is the ultimate solution for crystal clear pool water. This fast-dissolving formula kills bacteria and algae, reduces chlorine odor and irritation, and quickly restores crystal clarity. With its multi-functional shock treatment for weekly use, you can easily solve 90% of pool water problems within 24 hours.
The Cal Hypo based formula sanitizes without adding cyanuric acid (CYA), which prevents overstabilization or chlorine lock. This product is suitable for all including-lined saltwater systems. For the best results, use the HTH 6ay Test Strips to test and balance your swimming pool water twice weekly.
Stay all clear for cannonballs with HTH 4-in-1 Shock Treatment!
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| Brand Name | HTH |
|---|---|
| Global Trade Identification Number | 00073187520364 |
| Number of Packs | 6 |
| Number of Items | 1 |
| Unit Count | 96 Ounce |
| Item Highlight | Cal Hypo Formula; Prevents Bacteria & Algae; Restores Crystal Clear Water; Shock Treatment; Visibly Brilliant Sparkle |
| Included Components | HTH 52036 Swimming Pool Care Shock Advanced, Swimming Pool Chemical, Cal Hypo Formula, (6 pack) |
|---|---|
| Item Type Name | Swimming Pool Chemical Prevents Bacteria & Algae, Cal Hypo Formula |
| Model Number | 52036R |
| Item Form | Powder |
| Product Benefits | Prevents Bacteria,Sanitizes,Kills Bacteria |
| Item Weight | 16 ounces |
Yes, it is one of the stronger picks in its group. We score the HTH 52036R 9.4 out of 10. Amazon owners rate it 4.7 out of 5 across 14,678 reviews, above the 4.4 average of the 35 chlorine we track.
It was listed from $29.97 to $92.36 on Amazon depending on the option when we last checked in September 2026. That is cheaper than the $78.97 median for chlorine in our catalog. Amazon prices change daily, so use the price button on this page to see the current figure.
Amazon lists 12 options. Size: 6 Pack, 12 Pack, 1 Pack, 15 Pack, 36 Pack, 24 Pack, 4 Pack, 2 Pack. Style: Ultra Shock, Advanced Shock, Regular Shock. Pick an option on this page and the button opens exactly that model.
Similar, well-rated chlorine in our catalog: HTH 42052W (9.4/10, 4.7 stars from 5,127 owners); HTH 52047 (9.4/10, 4.7 stars from 829 owners); HTH 52123 Super Shock Treatment Swimming Pool (9.2/10, 4.6 stars from 1,256 owners).
HTH 42052WHTH 52047HTH 52123 Super Shock Treatment Swimming Pool
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