Hero image 0 of HTH Pool Care Chlorine Shock — Granules, 6 Pack (13.3 oz each) — Pool Shock Treatment for Weekly Use, 0 of 8
100+ bought since yesterdayBest seller
HTH Pool Care Chlorine Shock — Granules, 6 Pack (13.3 oz each) — Pool Shock Treatment for Weekly Use
Key item features
- Multi-functional Treatment: Shock treats, sanitizes, clarifies, and helps prevent bacteria and algae in swimming pool water with a convenient, easy-to-use product.
- Fast-Acting Formula: This multi-use pool shock with Cal Hypo solves 90% of pool water problems within 24 hours, acting and dissolving quickly.
- Brilliant Water Clarity: The Cal Hypo based formula sanitizes without adding cyanuric acid (CYA), preventing over-stabilization or chlorine lock for a visibly brilliant sparkle.
- Universal Pool Compatibility: Great for all pool types, including vinyl-lined pools and saltwater systems, without fading the pool liner.
- Boosts Chlorine: Designed to boost chlorine levels and kill bacteria and algae for a clean, clear pool.
- Weekly Maintenance: Apply as part of a weekly pool care routine to maintain free available chlorine levels between 1 and 4 ppm.
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Customer ratings & reviews
How item rating is calculated
Reviews summary
Pros
- : The product delivers quality commensurate with its price.
Neutral
- : It dissolves on contact but can take longer to finish.
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Showing 1-3 of 327 reviews
Jul 18, 2023
Reviewer name: Ace
5 out of 5 stars
Verified Purchase
Favorite product
I have had issues with shock not wanting to dissolve and stain my liner in the past. We have had 0 issues with this product. I will be sticking to this for years to come. We have a 10,000 gallon pool
Helpful?c960eaa0-688f-11f1-970f-13faca9cd0ac477858874
Aug 11, 2026
Reviewer name: John
Top Reviewer
Item details
Size: 13.3 oz
5 out of 5 stars
Verified Purchase
Pool Shock
Item works well, dissolves fast, makes pool cloudy at time of use but clears quickly. used it and it took care of slight algae problem we had. Has slight chlorine smell when first used but doesn't last long. Follow instruction on package.
Helpful?c960eaa0-688f-11f1-970f-13faca9cd0ac477858874
Aug 29, 2026
Reviewer name: CC60
Top Reviewer
Item details
Size: 13.3 oz
5 out of 5 stars
Verified Purchase
Buy this brand
This is the one to get, use at sundown and let the filter run all night. Works great !
Helpful?c960eaa0-688f-11f1-970f-13faca9cd0ac477858874
Current price is USD$23.4029.3 ¢/oz
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