HTH Pool Care Chlorine Shock Treatment, Pool Chemical Shock, Granules, 5 lb, for Weekly Pool Chlorination
HTH Pool Care Chlorine Shock Treatment, Pool Chemical Shock, Granules, 5 lb, for Weekly Pool Chlorination
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Top rated for algae control
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HTH Pool Care Chlorine Shock Treatment, Pool Chemical Shock, Granules, 5 lb, for Weekly Pool Chlorination

4.7 stars out of 249 reviews
(4.7)|
249 ratings

Key item features

  • Multi-Action Treatment: Shock treats, sanitizes, clarifies, and helps prevent bacteria and algae in swimming pool water with a convenient, easy-to-use granular formula.
  • Fast-Acting Solution: Utilizes a Cal Hypo-based formula that is fast-acting and fast-dissolving, designed to solve 90% of pool water problems within 24 hours when used weekly.
  • Prevents Overstabilization: Sanitizes without adding cyanuric acid (CYA), preventing overstabilization or chlorine lock for a visibly brilliant sparkle.
  • Broad Pool Compatibility: Suitable for all pool types, including vinyl-lined pools and salt water systems, without fading the pool liner.
  • Weekly Chlorination: Designed for weekly pool chlorination to boost chlorine levels and maintain free available chlorine between 1 and 4 ppm.
  • Integrated Pool Care: Recommended for use with HTH 6-Way Test Strips to test and balance swimming pool water twice weekly for optimal results.
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Current price is $28.04$5.61/lb
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Whitehall Supercenter
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Aisle G28
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Starting from $26.99

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Comparison Chart:
Chemical standard typeCalcium Hypochlorite ShockHTH Pool Care Chlorine Shock Treatment, Pool Chemical Shock, Granules, 5 lb, for Weekly Pool ChlorinationCalcium Hypochlorite ShockHTH Pool Care Shock Advanced — Granules, 6 Pack (6 lb total) — Pool Shock Treatment for Weekly Pool SanitizingCalcium Hypochlorite ShockHTH Pool Care Chlorine Shock Granules for Algae Prevention, Fast-Acting, 12 packShock(3 pack) HTH Pool Care Shock Advanced — Granules, 1 lb — Pool Shock Treatment for Weekly Use3” Chlorine Tablets(2 pack) HTH 3-inch Chlorine Tablet Advanced — Tablet, 6 oz — Pool Sanitizer for Swimming Pools3” Chlorine TabletsHTH 3-inch Chlorine Tablets — Tablet, 5 lb — Pool Sanitizer for Bacteria and Algae Control1” Chlorine TabletsHTH 1-inch Chlorine Tablets — Tablet Form, 5 lb — Pool Sanitizer to Kill Algae & BacteriaCalcium Hypochlorite ShockHTH Pool Care Chlorine Shock — Granules, 6 Pack (13.3 oz each) — Pool Shock Treatment for Weekly UseShock(3 pack) HTH Pool Care Shock Advanced — Granules, 6 Pack (6 lb total) — Pool Shock Treatment for Weekly Pool Sanitizing
FormGranulesHTH Pool Care Chlorine Shock Treatment, Pool Chemical Shock, Granules, 5 lb, for Weekly Pool ChlorinationGranulesHTH Pool Care Shock Advanced — Granules, 6 Pack (6 lb total) — Pool Shock Treatment for Weekly Pool SanitizingGranulesHTH Pool Care Chlorine Shock Granules for Algae Prevention, Fast-Acting, 12 packGranules(3 pack) HTH Pool Care Shock Advanced — Granules, 1 lb — Pool Shock Treatment for Weekly UseTablets(2 pack) HTH 3-inch Chlorine Tablet Advanced — Tablet, 6 oz — Pool Sanitizer for Swimming PoolsTabletsHTH 3-inch Chlorine Tablets — Tablet, 5 lb — Pool Sanitizer for Bacteria and Algae ControlTabletsHTH 1-inch Chlorine Tablets — Tablet Form, 5 lb — Pool Sanitizer to Kill Algae & BacteriaGranulesHTH Pool Care Chlorine Shock — Granules, 6 Pack (13.3 oz each) — Pool Shock Treatment for Weekly UseGranules(3 pack) HTH Pool Care Shock Advanced — Granules, 6 Pack (6 lb total) — Pool Shock Treatment for Weekly Pool Sanitizing
Pool chemical typeChlorine Pool ChemicalsHTH Pool Care Chlorine Shock Treatment, Pool Chemical Shock, Granules, 5 lb, for Weekly Pool ChlorinationSwimming Pool ShockHTH Pool Care Shock Advanced — Granules, 6 Pack (6 lb total) — Pool Shock Treatment for Weekly Pool SanitizingSwimming Pool ShockHTH Pool Care Chlorine Shock Granules for Algae Prevention, Fast-Acting, 12 packSwimming Pool Shock(3 pack) HTH Pool Care Shock Advanced — Granules, 1 lb — Pool Shock Treatment for Weekly UseChlorine Pool Chemicals(2 pack) HTH 3-inch Chlorine Tablet Advanced — Tablet, 6 oz — Pool Sanitizer for Swimming PoolsChlorine Pool ChemicalsHTH 3-inch Chlorine Tablets — Tablet, 5 lb — Pool Sanitizer for Bacteria and Algae ControlChlorine Pool ChemicalsHTH 1-inch Chlorine Tablets — Tablet Form, 5 lb — Pool Sanitizer to Kill Algae & BacteriaSwimming Pool ShockHTH Pool Care Chlorine Shock — Granules, 6 Pack (13.3 oz each) — Pool Shock Treatment for Weekly UseSwimming Pool Shock(3 pack) HTH Pool Care Shock Advanced — Granules, 6 Pack (6 lb total) — Pool Shock Treatment for Weekly Pool Sanitizing
Weight5 lbHTH Pool Care Chlorine Shock Treatment, Pool Chemical Shock, Granules, 5 lb, for Weekly Pool Chlorination6 lbHTH Pool Care Shock Advanced — Granules, 6 Pack (6 lb total) — Pool Shock Treatment for Weekly Pool Sanitizing9.97 lbHTH Pool Care Chlorine Shock Granules for Algae Prevention, Fast-Acting, 12 pack1 lbs(3 pack) HTH Pool Care Shock Advanced — Granules, 1 lb — Pool Shock Treatment for Weekly Use6 oz(2 pack) HTH 3-inch Chlorine Tablet Advanced — Tablet, 6 oz — Pool Sanitizer for Swimming Pools-HTH 3-inch Chlorine Tablets — Tablet, 5 lb — Pool Sanitizer for Bacteria and Algae Control5 lbHTH 1-inch Chlorine Tablets — Tablet Form, 5 lb — Pool Sanitizer to Kill Algae & Bacteria4.99 lbHTH Pool Care Chlorine Shock — Granules, 6 Pack (13.3 oz each) — Pool Shock Treatment for Weekly Use1 lbs(3 pack) HTH Pool Care Shock Advanced — Granules, 6 Pack (6 lb total) — Pool Shock Treatment for Weekly Pool Sanitizing
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Customer ratings & reviews

4.7 out of 5 stars
stars249 ratings168 reviews
How item rating is calculated
  1. 5 stars84% (210)
  2. 4 stars9% (23)
  3. 3 stars3% (7)
  4. 2 stars0% (1)
  5. 1 star3% (8)

Reviews summary

Pros
  • : Dissolves easily in water with little effort.
  • : Directions are easy to read and follow.
  • : Maintains pool water transparency.
  • : Offers good value at this cost.
  • : Made with durable and sturdy components.
Neutral
  • : Effective at times, but prone to fluctuations.
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Showing 1-3 of 168 reviews

Nov 18, 2025
Amanda
Walmart Associate
5 out of 5 stars review

Verified Purchase

Excellent Pool Shock -Easy, Effective, and Awesome

I've tried several pool shock products over the years, and this one is by far the easiest and most reliable. I don't have to deal with measuring out messy powders. Within a few hours, the water looks noticeably clearer and fresher. What really sets this shock apart is that it doesn't cause chlorine lock. I've had issues in the past with stabilized shocks building up too much conditioner in the water, but this one keeps my chlorine levels responsive and easy to balance. If you want a shock that works fast, keeps the water sparkling, and doesn't leave you fighting chemical issues afterward, this is a great choice. I'll definitely be buying it again!

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Oct 26, 2024
Bethany
Top Reviewer
5 out of 5 stars review

Verified Purchase

Does exactly as says.

This shock works, amazingly, as do all HTH products, in my opinion. It does exactly what it is supposed to do, and it does diss dissolve extremely fast, faster than powder. Also prevents chlorine lock. So yeah, does exactly what it says it does… Are you serious OK? what else do you really want from a product? So yes, five stars.

Incentivized Review
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Sep 7, 2024
Diane
5 out of 5 stars review

Verified Purchase

Excellent Product

HTH shock works well, even in the South's most intense heat. The container with the handle is much easier to use than the pail, making measuring easy.

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