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HTH

HTH 52031 Swimming Pool Care Shock, Swimming Pool Chlorinator Boosts Chlorine Levels, Cal Hypo Formula, 13.3oz (1 Pack)

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$3.70
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Availability: Only 4 left in stock, order soon!
Fulfilled by Amazon
Arrives Thursday, Nov 5
Order within 19 hours and 24 minutes

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At a glance

Condition
New
Size
1 Pack
Style
Regular Shock
Weight
13.3 oz
Item Form
Powder
Product Benefits
pevents bacteria and algae
In the box
HTH 52031 Swimming Pool Care Shock

Features 5

  • 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

Description

The HTH Multi-Use Shock Treatment is the perfect solution for keeping your swimming pool water sparkling clean. This convenient product shock treats, sanitizes, clarifies, and helps prevent bacteria and algae in your pool water. Its Cal Hypo based formula is fast-acting and fast-dissolving, solving 90% of pool water problems within 24 hours. The formula sanitizes without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock, creating a visibly brilliant sparkle. 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.

Specs 10

Brand HTH
Item Weight 13.3 Ounces
Item Form Powder
Product Benefits pevents bacteria and algae
Brand Name HTH
UPC 073187520319
Item Type Name Swimming Pool Chlorinator Boosts Chlorine Levels, Cal Hypo Formula
Manufacturer Innovative Water Care

Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Nov 5

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

Cheaper than Walmart
Size: 6 Pack Style: Regular Shock
Does what it should, great price.
Reviewed in the United States on February 22, 2026 by Amber
Very good product
Size: 2 Pack Style: Regular Shock
Works very well
Reviewed in the United States on February 14, 2026 by jon m moore
This is THE BEST ever! You won't go wrong with this!
Size: 6 Pack Style: Regular Shock
This is by far the best product for killing algae and it gives you the most amazingly clear water you have ever seen. I use it weekly and I wish I had known about this years ago when I was fighting algae and raising my chlorine level without ever using pool stabilizer (CYA) . They are not lying when that say it cures 90% of pool problems. ... show more
Reviewed in the United States on December 23, 2025 by Sid
Makes your green pool blue
Size: 6 Pack Style: Regular Shock
Pretty great at keeping my pool clean. Just like th stuff you find at the big box store. I've never been obsessive with the chemicals in the pool, just finding a least minimum amount of checmicals to keep the water clear and the water not being too imbalanced. When things get out of hand or there was a large storm this is great for getting things back on track. ... show more
Reviewed in the United States on March 16, 2026 by Chris
Great shock
Size: 1 Pack Style: Regular Shock
This shock was great. It cleared our pool within 24 hours
Reviewed in the United States on January 31, 2026 by q,,
Good price and convenient
Size: 6 Pack Style: Regular Shock
Good deal for this product.
Reviewed in the United States on February 24, 2026 by D. Nye
Very good product
Size: 1 Pack Style: Regular Shock
Work extremely well!
Reviewed in the United States on January 25, 2026 by Connie McDowell
Cheaper than the big stores!
Size: 6 Pack Style: Regular Shock
I got this to control algae in my pool. My pool takes 3 pouches so I get 2 shocks in 1 box. The price is really good. Cheaper than the pool store & other “big box” stores near me. I would definitely buy this again.
Reviewed in the United States on December 5, 2025 by Chris D.
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