HTH Pool Care Shock Advanced — Granules, 12 Pack (1 lb each) — Pool Shock Treatment for Weekly Pool Sanitizing
HTH Pool Care Shock Advanced — Granules, 12 Pack (1 lb each) — Pool Shock Treatment for Weekly Pool Sanitizing
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HTH Pool Care Shock Advanced — Granules, 12 Pack (1 lb each) — Pool Shock Treatment for Weekly Pool Sanitizing

|11.4K ratings
HTH Pool Care Shock Advanced — Granules, 12 Pack (1 lb each) — Pool Shock Treatment for Weekly Pool SanitizingHTH Pool Care Shock Advanced for Swimming Pools Granules 12 Pack 1 lbHTH Pool Care Shock Advanced for Swimming Pools Granules 6 Pack 1 lbHTH Pool Care Shock Advanced for Swimming Pools Granules 1 lb
Count Per Pack12

Key item features

  • Advanced Weekly Treatment: This multi-functional shock treatment is designed for weekly use, effectively preventing bacteria and algae while solving 90% of common pool water problems within 24 hours.
  • Rapid Clarity Restoration: The powerful 4-in-1 formula restores crystal clarity to pool water within 24 hours, providing a visibly brilliant sparkle and reducing chlorine odor and irritation.
  • Cal Hypo Formula: Utilizing a Cal Hypo-based formula, this product sanitizes without adding cyanuric acid (CYA), thereby preventing over-stabilization or chlorine lock.
  • CYA-Free Chlorination: Unlike traditional chlorine products, its fast-acting, fast-dissolving Cal Hypo formula provides chlorination without increasing CYA levels, ensuring a beautiful sparkle all season.
  • Universal Pool Compatibility: Suitable for all pool types, this shock treatment will not fade pool liners, making it a versatile solution for maintaining healthy swimming pool water.
  • Simple Application Process: For best results, apply HTH Shock Advanced weekly according to on-pack instructions, directly to pool water or skimmer, to maintain free available chlorine levels between 1 and 4 ppm.
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4.6 out of 5 stars
stars
11.4K ratings2,187 reviews
How item rating is calculated
  1. 5 stars82% (9,356)
  2. 4 stars9% (999)
  3. 3 stars3% (321)
  4. 2 stars2% (185)
  5. 1 star5% (553)
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Showing 1-3 of 2,187 reviews

Jun 10, 2026
karlee
Item details
Count per pack: 1
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Works as expected

I've used this shock treatment several times and it works exactly as expected. It's easy to apply, dissolves well, and helps keep the pool water clear and clean. The individual packets make it convenient to use the right amount without any guesswork. Great product that gets the job done every time.

Helpful?f5103c50-688f-11f1-970f-13faca9cd0ac384454871
Jul 6, 2026
David
Item details
Count per pack: 12
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Quality pool chemicals on demand if needed

Compared to other quick dissolving shock for pools, this is a very good price for a 12 pack. Works with salt water pools. And with Walmart plus delivery in as quick as next day if needed. Yes you can get the same chemicals from Home Depot Lowe's and Amazon but Walmart has been very reliable.

Helpful?f5103c50-688f-11f1-970f-13faca9cd0ac384454871
Jul 18, 2026
Robert
Item details
Count per pack: 12
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Best price and quality

I bought this HTH brand after seeing great reviews on multiple pool care sites. Walmart online purchase and pick up was by far the best price. I was very pleased with this shock. Does really well for us. Crystal clear pool. I followed the directions and mixed in a bucket to add it as a dilution solution. I preferred to add over time into the return stream over 5-7 minutes. If done slowly it disappears almost immediately. Works on my 24 round above ground.

Helpful?f5103c50-688f-11f1-970f-13faca9cd0ac384454871
Current price is $45.80$3.82/lb
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