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HTH

HTH 52030B Swimming Pool Care Shock, Swimming Pool Chlorinator Boosts Chlorine Levels, Cal Hypo Formula, 13.3oz (Pack of 6)

  • Based on 17,233 reviews
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Availability: In Stock.
Fulfilled by Four Seasons Pool Supply
Arrives Jul 23 – Jul 27
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Size: 6 Pack


Style: Regular Shock


Features

  • BENEFIT: Shock treat, sanitize, clarify, and help prevent bacteria and algae in your swimming pool water, all with this convenient, easy-to-use product
  • FEATURES: Multi-use pool shock with Cal Hypo; Use weekly to solve 90% of pool water problems within 24 hours; Fast-acting and fast-dissolving
  • 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
  • YOURE 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 Multi-Use Shock Treatment is a must-have for any pool owner looking to keep their water sparkling clean. This convenient product shock treats, sanitizes, clarifies, and helps prevent bacteria and algae in your swimming pool water. With Cal Hypo as its active ingredient, it can solve 90% of pool water problems within 24 hours. The fast-acting and fast-dissolving formula creates a visibly brilliant sparkle without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock. It's compatible with all pool types, including vinyl-lined pools and saltwater systems. For best results, combine with HTH 6-Way Test Strips to test and balance your pool water twice weekly. Keep your pool water crystal clear with HTH Multi-Use Shock Treatment.

Brand: HTH


Item Weight: 13.3 Ounces


Item Form: Granular


Product Benefits: Kills Bacteria


UPC:


Brand Name: HTH


UPC: 073187520302


Number of Items: 1


Unit Count: 78.4 Ounce


Model Number: 52030


Manufacturer Part Number: 52030


Manufacturer: Innovative Water Care


Item Type Name: Swimming Pool Chlorinator Boosts Chlorine Levels, Cal Hypo Formula


Included Components: HTH 52030 Swimming Pool Care Shock


Manufacturer Warranty Description: Warranty


Item Form: Granular


Product Benefits: Kills Bacteria


Item Weight: 13.3 Ounces


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Jul 23 – Jul 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

    • Great Pool Care
Size: 1 Pack Style: Regular Shock
The HTH 52031 Pool Care Shock worked very well for quickly clearing up cloudy water and boosting chlorine levels in our pool. After using it, the water looked noticeably cleaner and fresher within a short amount of time. The product dissolves fairly quickly and was easy to apply following the directions on the package. It helped control algae and that strong “pool smell” that usually happens when chlorine levels are off balance. I also liked that it restored water clarity without requiring multiple treatments. This shock treatment is especially useful after heavy pool use, rainstorms, or hot weather when chlorine levels tend to drop faster. The packaging was convenient, and the product feels reliable for regular pool maintenance. Pros: Quickly boosts chlorine levels Helps clear cloudy water Effective against algae and odors Easy to use Good for routine pool maintenance Cons: Strong chlorine smell during application Best results require proper water balance and testing Overall, this is a dependable pool shock treatment that helps keep pool water clean, clear, and swim-ready with minimal hassle. ... show more
Reviewed in the United States on May 26, 2026 by Cristina
    • 100% buy!
Size: 1 Pack Style: Regular Shock
This worked very well! Within thirty minutes I was seeing signs of my pool clearing, and by the next day it was completely clear. I was wary about getting it so I only ordered the two pack, but I will definitely be purchasing more for future use.
Reviewed in the United States on June 4, 2026 by Lexi Ainbinder
    • Turned my neglected green pool blue overnight Turned my neglected green pool blue overnight
Size: 1 Pack Style: Regular Shock
Review Image by Elizabeth Monroe
Review Image by Elizabeth Monroe
Review Image by Elizabeth Monroe
Review Image by Elizabeth Monroe
I used this last year after coming home from a long international trip to a completely green pool and really I was impressed with how well it worked. My pool had been neglected for over two weeks while I was away and by the time I got home the water was fully green with visible algae growth. I added two bags of this shock around the perimeter of the pool in the evening with the filter running and brushed the pool afterward to help make sure everything dissolved completely. By the next morning, the pool had already changed from swamp green to a cloudy blue. It was not crystal clear yet, but the algae was clearly dead and the transformation overnight was dramatic. At that point I backwashed and rinsed my sand filter and a crazy amount of algae flushed out. I continued filtering nonstop, brushed the walls again, skimmed debris, and used socks over the inlet ports to catch the finer dead algae particles. Throughout the day the socks kept collecting thick layers of fine algae residue so I rinsed them several times as the filter continued running. By the following morning I could clearly see the liner pattern at the bottom of the pool again. After another day of backwashing, brushing, vacuuming, skimming, and filtering, the pool was completely clear and ready for the family to enjoy again. I think it’s important to mention that bringing a green pool back takes patience no matter what brand of shock you use. This is not an instant one-hour fix but the product absolutely did its job and worked quickly once the filter system had time to remove all the dead algae. For reference, I used this in a soft sided above ground pool with a sand filter system. The attached photos show the pool before treatment, the morning after shocking, the second day of filtering and cleaning, then the final clear result on day 3. Pros: Worked quickly on a severely green pool Noticeable overnight improvement Killed algae effectively Dissolved well after brushing Worked well with a sand filter setup Cons: Restoring a neglected pool still takes time and repeated filtering/backwashing ... show more
Reviewed in the United States on May 14, 2026 Reviewed in the United States on May 14, 2026 by Elizabeth Monroe
    • Chlorine keep you clean Chlorine keep you clean
Size: 6 Pack Style: Regular Shock
Review Image by Vancarlus Tennison
Review Image by Vancarlus Tennison
Review Image by Vancarlus Tennison
I’m very pleased with the HTH 52030B Swimming Pool Care Shock! This product does exactly what it promises—quickly boosts chlorine levels and gets the pool back to looking clean and clear in no time. I’ve used it regularly, and it works fast to clear up cloudy water and keep everything sanitized. It’s especially helpful after heavy pool use or after a storm when the water needs a quick refresh. Just one treatment makes a noticeable difference. The application is simple and straightforward, which makes pool maintenance a lot less stressful. I also like that it’s reliable—you can count on consistent results every time. Overall, this is a must-have for keeping your pool in great condition. Effective, easy to use, and a great addition to any pool care routine. Highly recommend! ... show more
Reviewed in the United States on April 6, 2026 Reviewed in the United States on April 6, 2026 by Vancarlus Tennison
    • 4 in one
Size: 1 Pack Style: Regular Shock
It’s not the 6 in one type but did a pretty good job
Reviewed in the United States on May 27, 2026 by SteelMan
    • Great quality for the price
Size: 1 Pack Style: Regular Shock
Great product, great price!
Reviewed in the United States on May 26, 2026 by Britney
    • Good product
Size: 1 Pack Style: Regular Shock
I've always loved this pool shock. I've had inground pools and above ground pools and it works on either!
Reviewed in the United States on May 25, 2026 by Kimberly Sinclair
    • Good job
Size: 6 Pack Style: Regular Shock
Good price and does a great job for my pool
Reviewed in the United States on May 29, 2026 by It ok not the right one I need.

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