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HTH Pool Care Shock for Swimming Pools, Pool Chemicals, 5.5 lbs

4.6 stars out of 773 reviews

(4.6)|

773 ratings

Key item features

Multi-Use Shock: Multi-use pool shock with Cal Hypo for versatile pool care.
Weekly Treatment: Use weekly to solve 90% of pool water problems within 24 hours.
Fast-Acting Formula: Fast-acting and fast-dissolving for immediate results.
Brilliant Sparkle: Provides a visibly brilliant sparkle to your pool water.
Chlorine Boost: Boosts chlorine levels without adding cyanuric acid (CYA) to prevent over-stabilization or chlorine lock.
All Pool Types: Suitable for all pool types, including vinyl-lined pools and salt water systems.
Easy Application: Follow on-pack instructions to add directly to pool water or skimmer for best results.
HTH Reliability: Designed to work hard and make pool maintenance easy, keeping your pool water healthy and clear.

Generated by AI

Specs

Chemical standard type
Shock
Form
Granules
Weight
5.5 lb
Pool chemical type
Swimming Pool Shock
Product net content parent
88 Ounces
Size
5.5 lbs

Current price is $44.95

Price when purchased online

How do you want your item?

Columbus, 43215

Arrives between Feb 19 - Feb 21

Shipping fee $3.98

Sold and shipped by M.O.S. Hardware

4.288598574821853 stars out of 5, based on 842 seller reviews(4.3)

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liquid chlorine for pool

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About this item

Product details

HTH Pool Care Shock for Swimming Pools, Boosts Chlorine Levels, Cal Hypo Formula, Pool Chemicals, 5.5 lbs

HTH® Shock is the original swimming pool shock designed to boost chlorine levels and kill bacteria and algae for a clean, clear pool. Traditional chlorine products contain cyanuric acid (CYA). When too much CYA builds up, it can cause over-stabilization or chlorine lock and cloud your water. The fast-acting, fast-dissolving Cal Hypo based formula in HTH® Shock provides chlorination without adding extra CYA for a beautiful sparkle all season. This pool shock is great for all pool types and won't fade your pool liner.

How To Use HTH® Shock Follow the on-pack instructions according to your pool size to add HTH® Shock directly to swimming pool water or skimmer. Make sure to use a clean, dry scoop. For best results, apply HTH® Shock as part of your weekly pool care routine to keep free available chlorine levels between 1 and 4 ppm.

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 over-stabilization or chlorine lock.
This product is great for all pool types including vinyl-lined pools and salt water systems.

About HTH® Pool Care
HTH® was developed with the pool owner in mind. We know that maintaining your pool water can be a lot of work. That’s why we're here every step of the way, helping you clear the uncertainty from pool care. With economical, easy-to-use solutions, HTH® is designed to work hard so you're prepared to tackle whatever life throws in your pool. From balancing your water to treating green water, we offer a full line of products to keep your pool water healthy and your swimmers happy.

Shock treat, sanitize, clarify and help prevent bacteria and algae in your swimming pool water, all with this convenient, easy-to-use pool chemical.

You’re all clear with HTH®
For best results, use with HTH® 6-Way Test Strips to test and balance your swimming pool water twice weekly.

info:

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Warranty

Warranty information

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Compare with similar items

Comparison Overview:
Product	Viewing this item HTH Pool Care Shock for Swimming Pools, Pool Chemicals, 5.5 lbs current price $44.95 HTH Pool Care Shock for Swimming Pools, Pool Chemicals, 5.5 lbs 4.6 out of 5 Stars. 773 reviews	HTH Pool Care Chlorine Shock Treatment, Pool Chemical Shock, Granules, 5 lb, for Weekly Pool Chlorination current price $28.04 HTH Pool Care Chlorine Shock Treatment, Pool Chemical Shock, Granules, 5 lb, for Weekly Pool Chlorination 4.7 out of 5 Stars. 249 reviews	HTH Pool Care Chlorine Shock — Granules, 6 Pack (13.3 oz each) — Pool Shock Treatment for Weekly Use current price $22.97 HTH Pool Care Chlorine Shock — Granules, 6 Pack (13.3 oz each) — Pool Shock Treatment for Weekly Use 4.6 out of 5 Stars. 773 reviews	HTH 6 lbs Ultra Granule Shock Treatment current price $33.99 HTH 6 lbs Ultra Granule Shock Treatment 3.4 out of 5 Stars. 5 reviews	Clorox Pool&Spa Liquid Super Water Clarifier 32 oz current price $10.77 Clorox Pool&Spa Liquid Super Water Clarifier 32 oz 4.6 out of 5 Stars. 1354 reviews

Comparison Chart:
Chemical standard type	ShockHTH Pool Care Shock for Swimming Pools, Pool Chemicals, 5.5 lbs	Calcium Hypochlorite ShockHTH Pool Care Chlorine Shock Treatment, Pool Chemical Shock, Granules, 5 lb, for Weekly Pool Chlorination	Calcium Hypochlorite ShockHTH Pool Care Chlorine Shock — Granules, 6 Pack (13.3 oz each) — Pool Shock Treatment for Weekly Use	Calcium Hypochlorite ShockHTH 6 lbs Ultra Granule Shock Treatment	ClarifierClorox Pool&Spa Liquid Super Water Clarifier 32 oz
Form	GranulesHTH Pool Care Shock for Swimming Pools, Pool Chemicals, 5.5 lbs	GranulesHTH Pool Care Chlorine Shock Treatment, Pool Chemical Shock, Granules, 5 lb, for Weekly Pool Chlorination	GranulesHTH Pool Care Chlorine Shock — Granules, 6 Pack (13.3 oz each) — Pool Shock Treatment for Weekly Use	GranulesHTH 6 lbs Ultra Granule Shock Treatment	LiquidClorox Pool&Spa Liquid Super Water Clarifier 32 oz
Weight	5.5 lbHTH Pool Care Shock for Swimming Pools, Pool Chemicals, 5.5 lbs	5 lbHTH Pool Care Chlorine Shock Treatment, Pool Chemical Shock, Granules, 5 lb, for Weekly Pool Chlorination	4.99 lbHTH Pool Care Chlorine Shock — Granules, 6 Pack (13.3 oz each) — Pool Shock Treatment for Weekly Use	6 lbsHTH 6 lbs Ultra Granule Shock Treatment	-Clorox Pool&Spa Liquid Super Water Clarifier 32 oz
Pool chemical type	Swimming Pool ShockHTH Pool Care Shock for Swimming Pools, Pool Chemicals, 5.5 lbs	Chlorine Pool ChemicalsHTH Pool Care Chlorine Shock Treatment, Pool Chemical Shock, Granules, 5 lb, for Weekly Pool Chlorination	Swimming Pool ShockHTH Pool Care Chlorine Shock — Granules, 6 Pack (13.3 oz each) — Pool Shock Treatment for Weekly Use	Swimming Pool ShockHTH 6 lbs Ultra Granule Shock Treatment	Pool Clarifier ChemicalsClorox Pool&Spa Liquid Super Water Clarifier 32 oz

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Customer ratings & reviews

4.6 out of 5 stars

stars773 ratings298 reviews

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Showing 1-3 of 298 reviews

Jul 18, 2023

Ace

5 out of 5 stars review

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?

Jan 24, 2026

jack

Item details

Count: 6

Sold and shipped byIntegriMarket

5 out of 5 stars review

Verified Purchase

Pricey

Seems to work well, may be a lil weak. Sometimes takes 2 bags instead of one. And always priced to high

Helpful?

Nov 25, 2025

Fran

Item details

Size: 13.3 oz

5 out of 5 stars review

Verified Purchase

HTH Pool Care Chlorine Shock — Granules, 6 Pack

These are very easy to use with an inground pool and dissolve fast. The pool's water is clear in no time.

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