Top 10 Best hth pool shock in 2026

Last Updated - 6/7/2026

🏆Best Choice

HTH

HTH 52036R Pool Care Shock Advanced, Swimming Pool Chemical - Cal Hypo Formula, Prevents Bacteria & Algae, Restores Crystal Clear Water - Shock Treatment, (6 Pack)

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•BENEFITS: Stay all clear for cannonballs; This fast-dissolving, convenient 4-in-1 formula kills bacteria and algae, reduces chlorine odor and irritation, and quickly restores crystal clarity
•FEATURES: Multi-functional shock treatment for weekly use to solve 90% of pool water problems within 24 hours and restore crystal clarity
•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
•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

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$26.76

$35.99

-26%

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Clorox Pool & Spa

Clorox® Pool&Spa™ Shock Plus, for Crystal Clear Swimming Pool Water, Swim-ready in 15 minutes, Suitable for vinyl pools (6-Pack)

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•4 in 1 Formula: Kills bacteria and won’t impact pH. Clears cloudy water. Destroys contaminants. Improves filter performance
•Swim-ready in 15 minutes: Fast dissolving formula works quickly so you can treat and swim in just 15 minutes
•Compatibility: This product is safe for all swimming pool surfaces, including vinyl, plaster, fiberglass, and tile.
•Usage: Use 1 lb. per 12,000 gallon of water. Shock pool weekly and after heavy use, high temperatures, or rain.
•Clorox Pool App: Test like an expert anytime, anywhere with the Clorox Pool App. Solve common swimming pool problems and get personalized product and dosage recommendations

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$29.98

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HTH

HTH Spa 86134 Clear Chlorinating Sanitizer, Spa & Hot Tub Chemical Controls Bacteria and Algae, 2.25 lbs

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•BENEFIT: Rely on this convenient and easy-to-use sanitizer to control algae, kill bacteria, and destroy contaminants so you can get the most out of your spa
•IDEAL USE: For sanitizing and shock treating spas and hot tubs; Destroys algae and bacteria; Fast acting and easy to use
•CREATES MORE COMFORTABLE WATER: Protects water against chlorine loss for more comfortable water with no sediment
•COMPATIBLE WITH CHLORINE-BASED SPAS: HTH Spa Clear Chlorinating Sanitizer is great for chlorine systems
•YOU'RE ALL CLEAR WITH HTH: For best results, use HTH Spa Clear Chlorinating Sanitizer as part of your regular HTH Spa care routine

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$24.98

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HTH

HTH 52038 Swimming Pool Care Green to Blue, Advanced Shock System, 2-Step Swimming Pool Care Solution, 1 Kit

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•BENEFITS: Fight a severe algae bloom and transform your swimming pool water from green to blue in 24 hours with this easy-to-use system
•EASY TO USE: Simple 2-step system; Pack I is a strong algae-fighting pool shock with Cal Hypo; Pack II is a powerful flocculant that drops particles to floor for easy vacuuming
•VISIBLY BRILLIANT SPARKLE: This Cal Hypo based formula transforms water from green to blue within 24 hours without adding cyanuric acid (CYA) to prevent overstabilization or chlorine lock
•COMPATIBLE WITH ALL SWIMMING POOLS: This product is effective for all pool types that can vacuum to waste; It’s ideal for vinyl-lined pools and won't fade liners
•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

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$27.47

$45.00

-39%

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HTH

HTH 52047 Swimming Pool Care Salt Shock, Stabilized Chlorinator, 1 dose Treats 10000 gallons, 5x12oz Packets

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•IDEAL FOR SALTWATER POOLS: This dichlor based product contains 56% available chlorine and works best with salt chlorine generators. Let this concentrated formula remove contaminants and algae for crystal clear pool water.
•EASY TO USE: Shock weekly to prevent 90% of pool water problems, based on the most common pool problems. Prevention is better than cure! This product does not damage your generator and is compatible with all pool surfaces.
•FEATURES: Power-packed convenience; HTH 52047 Swimming Pool Care Salt Shock is your go-to solution for maintaining water clarity. With its fast-dissolving 5x12oz packets, this chlorinator treats 10000 gallons of water, making pool maintenance a breeze.
•RAPID DISSOLUTION FOR INSTANT CLARITY: Say goodbye to cloudy water; HTH 52047 Swimming Pool Care Salt Shock features a unique formula that conveniently dissolves immediately upon application. This fast acting formula allows you to spend less time on maintenance and more time enjoying your oasis.
•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

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$35.91

$39.99

-10%

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HTH

HTH 52043 Pool Care Shock Advanced, Swimming Pool Chemical Prevents Bacteria & Algae, Cal Hypo Formula, 2 lbs (2-Pack)

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•BENEFIT: Stay all clear for cannonballs; This fast-dissolving, convenient 4-in-1 formula kills bacteria and algae, reduces chlorine odor and irritation, and quickly restores crystal clarity
•FEATURES: Multi-functional shock treatment for weekly use; Use weekly to solve 90% of pool water problems within 24 hours
•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
•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

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$19.99

$24.99

-20%

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HTH

HTH 52027 Ultimate Shock Treatment Swimming Pool Chlorine Cleaner, 1 lb

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•BENEFITS: Increases the chlorine level in swimming pools to kill bacteria and algae to keep your pool water clear and ready for fun all season long
•USE: Apply directly to pool water as needed; Test pool water and shock weekly to keep free available chlorine levels between 1 and 4ppm
•COMPATIBILITY: Effective for all swimming pool types including pools with liners and Gunite pools, and saltwater pool systems
•FEATURES: Increases chlorine levels; Kills and prevents bacteria and algae; Reduces eye and skin irritation; Prevents stains from metals and scale; See results in 24 hours; 1 bag treats 13,500 gallons; Won’t fade vinyl pool liners
•INCLUDES: One 1-lb bag of shock treatment for your swimming pool

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$14.95

$16.99

-12%

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HTH

HTH 52123 Super Shock Treatment Swimming Pool Chlorine Cleaner, 1 lb (Pack of 15)

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•BENEFITS: Increases the chlorine level in swimming pools to kill bacteria and algae to keep your pool water clear and ready for fun all season long
•USE: Apply directly to pool water as needed; Test pool water and shock weekly to keep free available chlorine levels between 1 and 4ppm
•COMPATIBILITY: Effective for all swimming pool types including pools with liners and Gunite pools, and saltwater pool systems
•FEATURES: Increases chlorine levels; Kills and prevents bacteria and algae; Keeps water clear; See results in 24 hours; 1 bag treats 13,500 gallons; Won’t fade vinyl pool liners
•INCLUDES: 15 1-lb bags of shock treatment for your swimming pool

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$76.00

$79.99

-5%

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HTH

HTH 52035 Swimming Pool Care Shock Advanced, Swimming Pool Chemical, Cal Hypo Formula, 1lb (Pack of 2)

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•The information below is per-pack only
•BENEFITS: Stay all clear for cannonballs; This fast-dissolving, convenient 4-in-1 formula kills bacteria and algae, reduces chlorine odor and irritation, and quickly restores crystal clarity
•FEATURES: Multi-functional shock treatment for weekly use to solve 90% of pool water problems within 24 hours and restore crystal clarity
•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
•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

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$11.94

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HTH

HTH 52031 Swimming Pool Care Shock, Swimming Pool Chlorinator Boosts Chlorine Levels, Cal Hypo Formula, 13.3oz (Pack of 2)

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•The information below is per-pack only
•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
•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

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$17.02

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