Top 10 Best 1 chlorine tablets for pools in 2026

Last Updated - 6/17/2026

🏆Best Choice

HTH

HTH 52031 Swimming Pool Care Shock, Swimming Pool Chlorinator Boosts Chlorine Levels, Cal Hypo Formula, 13.3oz (1 Pack)

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•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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$5.24

$7.00

-25%

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XtremepowerUS

XtremeClear 1" Chlorine Tabs Swimming Pool Hot Tub & Spa Eliminate Bacteria & Algae Sanitizer Makes Water Clean & Crystal Clear Slow Dissolving 1.5lbs

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Versatile - The chlorine tabs are perfect for above-ground swimming pools, hot tubs, spa, hot spring pools, even for toilets. Chlorine Tabs dissolve slowly and last up to one week
•Compatible With All Pools - Great for all pool types, including saltwater systems; Use 1" tabs for above ground pools. Use in floater, feeder, or skimmer basket (Floating Tablet Dispenser Sold Separate ASIN: B07193P5HZ)
•Long-Lasting Chlorine Tabs - Each tab is pre-stabilized against the sun's UV rays to prevent premature chlorine burn-off, making them last longer
•Saving Money - Having our chlorinating tablets, you don't need change the frequently, 1-tab helps you saving about 5,000 gallons of water
•Active Ingredients - Our pool tablets are pro-grade made from 99% Trichloro-S-Triazinetrione and 90% stabilized chlorine

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$17.88

$19.95

-10%

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HTH

HTH 42049 Pool Care 1" Chlorine Tabs, Swimming Pool Sanitizer with Added Clarifier - Eliminates Bacteria & Algae, Makes Water Clean & Crystal Clear, Sanitizes & Protects - Slow Dissolving, 1.5 lbs

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•BENEFIT: Protect your swimming pool and enjoy clean, clear water with these easy-to-use chlorine-based tabs; Kills algae and bacteria
•CLEAN, CLEAR WATER: HTH Chlorine Tabs keep water clear while protecting against bacteria, algae and other organisms
•SLOW DISSOLVING, LONG LASTING: Sun protected for longer chlorine life, HTH Chlorine Tabs dissolve slowly and last up to one week
•COMPATIBLE WITH ALL POOLS: This product is great for all pool types, including saltwater systems; Use 1" tabs for above ground pools, 3" tabs for inground pools; Use in floater, feeder, or skimmer basket
•YOU’RE ALL CLEAR WITH HTH: For best results, use HTH 6-Way Test Strips twice weekly to test and balance your swimming pool water and keep chlorine levels between 1 and 4 ppm

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$19.24

$24.00

-20%

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Arm & Hammer

ARM & HAMMER Clear Balance Swimming Pool Alkalinity pH Maintenance Tablets, White, 1 Pack, 24 Count

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•Clear Balance Pool Maintenance Tablets use the power of pure ARM & HAMMER Baking Soda in one simple step to maintain your pool’s alkalinity and pH levels the easy way
•Formulated with trusted ARM & HAMMER Baking Soda to help chlorine work more effectively in your swimming pool; this Baking Soda product for pools also helps to protect pool surfaces from corrosion
•Contains pure ARM & HAMMER Baking Soda and comes in a convenient tablet form, so there’s no measuring or mess; simply add one tablet for every one chlorine tablet to optimize chlorine performance in your swimming pool
•Using this Baking Soda for Pool product results in crystal-clear pool water that feels better on your skin and eyes, and can help reduce the need for other corrective and often costly swimming pool chemicals
•This Baking Soda for Pool product contains 24 tablets in a handy container with resealable lid, so you can choose the size that works best for your swimming pool maintenance needs

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$32.54

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HTH

HTH 42051 Swimming Pool Care 3" Chlorine Tabs Advanced, Swimming Pool Chlorinating Sanitizer, 8oz

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•BENEFIT: Sanitizer, clarifier, and algaecide to protect your swimming pool and swimmers with one easy and convenient tab
•CLEAR BLUE WATER: This advanced formula sanitizes, clarifies, and kills algae for beautiful, clean, and clear water all season
•SLOW DISSOLVING, LONG LASTING: Sun protected for longer chlorine life, HTH 3” Chlorine Tabs Advanced dissolve slowly and last up to one week
•COMPATIBLE WITH ALL POOLS: This product is great for all pool types including vinyl-lined pools and saltwater systems; Use in floater, feeder, or skimmer basket
•YOU’RE ALL CLEAR WITH HTH: For best results, use HTH 6-Way Test Strips twice weekly to test and balance your swimming pool water and keep chlorine levels between 1 and 4 ppm

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$5.92

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Swimline

HYDROTOOLS BY SWIMLINE 8715 Mini Chemical Dispenser For Spas and Personal Pools| Compatible With Bromine & Chlorine Supports 1’’ Tablets | Adjustable Control Ring For Customizable Flow Rate

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•{EASY TO USE} Simply load your Hydrotools dispenser with chlorine or bromine tablets, and it will float in your pool or spa, saving you time & energy. This means you can focus on enjoying your pool or spa, rather than worrying about its maintenance.
•{SMALL CAPACITY}: This mini dispenser is perfect for spas and can accommodate 1 inch chlorine or bromine tablets. This reduces the need for frequent refills, allowing you to spend more time enjoying and less time maintaining it.
•{ADJUSTABLE] The dispenser is adjustable, so you can easily customize the flow rate to suit the unique requirements of your pool or spa. This means you can maintain the appropriate chemical balance no matter the size or shape of your pool.
•{DURABLE MATERIAL} The dispenser is made with double reinforced durable materials, ensuring that it can resist the elements and the harsh exposure to pool chemicals. It is built to last, and is designed to protect against corrosion over time.
•{VERSATILE} The dispenser is compatible with most chlorine and bromine tablets, and can be used with various pool and spa types. This means that you can use the dispenser with your preferred pool or spa, regardless of its size or type.
•{COST-EFFECTIVE} The dispenser helps to prolong the life of pool or spa equipment by maintaining proper chemical levels. This reduces the need for costly chemical adjustments, making it an excellent investment for any pool or spa owner.
•{PRO TIP} Hydrotools is an independently operated brand based in the USA where we design and test all our products. We provide on demand customer support and a 1-year guarantee. Pairs perfectly with the Hydrotools suite of pool maintenance equipment.

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$6.20

$9.95

-38%

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Clorox Pool & Spa

Clorox® Pool&Spa™ XtraBlue 1” Swimming Pool Chlorinating Tablets, Kills Bacteria & Stops Algae, Perfect for Small Pools (5 LB)

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•Cleans Water & Stops Algae: Kills harmful bacteria and prevents equipment corrosion, scale and stains. Kills and prevents all types of swimming pool algae (green, mustard, black)
•Long-lasting sunlight protection: Contains chlorine stabilizer to extend the life of your clean
•Creates Silky Smooth Feeling Water: XTRABLUE chlorinating tablets contain conditioners for silky smooth feeling water
•Usage: Safe for all swimming pool surfaces, including vinyl, plaster, fiberglass, and tile
•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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$49.98

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PROFELIZ

PROFELIZ Stabilized Chlorine Tablets 1 Inch for Swimming Pools,Hot Tub & Spa,Kills Bacteria and Stops Algae,Slow Dissolving,Perfect for Small Pools,1.35 lb

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Active Ingredients:Each 1 chlorine tablets for pool contains 99% Trichloro-S-Triazinetrione with 90% minimum available chlorine
•Long-Lasting Protection: Ensure your pool remains effective with Profeliz 1” chlorine tablets even under direct sunlight exposure; Profeliz 1 inch chlorine tablets for pool are designed to dissolve slowly and last up to one week
•Clean Effectively: Keep your pool clean and clear all season long
•Suitable for all pools: This product is great for all swimming pool types; including above ground and in-ground pools;Profeliz 1 inch chlorine tablets for hot tub for pool fit easily into most of pool skimmers;floaters or other chlorinating devices
•Warm Reminder: Please note that some hot tub chlorine tablets may be cracked or broken in their packages due to carrier handling during transportation;It is important to note that such breakage will not affect the effectiveness of chlorine tablets

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$14.98

$19.99

-25%

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BioGuard

BioGuard SilkGuard Complete 1” Chlorinating Tablets, 4.5 lb, Chlorine Tablets for Sanitizing Swimming Pools

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Bioguard Chlorine Tablets
•BioGuard SilkGuard Tablets
•Hot tub chlorine tablets main ingredients: Citric acid, peroxide, enzyme, surfactant, sodium carbonate, Sodium trichloroisocyanurate; Chlorine hot tub tablets, spa chlorine tablets hot tub, pool cleaning kit chlorine tablets,multi function chlorine tablets for hot tubs
•Magic pool cleaning tablet super purifying: Can clean the swimming pool most efficiently; In this hot summer, you can enjoy the clear swimming pool; These pool cleaning kits provide a safer, cleaner, and more enjoyable swimming experience; Paddling pool cleaning tablets, chlorine tablets for hot tub, slow release chlorine tablets for hot tubs, swimming pool chlorine tablets, chlorine for hot tub tablets, chlorine tablets for swimming pool

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$45.99

$49.99

-8%

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HTH

HTH 42031 1" Chlorinating Tablets Swimming Pool Chlorine, 5 lbs

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•BENEFITS: Sanitizes and protects your pool water so you can enjoy swimming all season long; kills bacteria and algae with built-in algaecide
•USE: Place tabs in pool skimmer, floater, or feeder for simple, DIY pool care
•COMPATIBILITY: Vinyl pools and saltwater systems, smaller type pools
•FEATURES: Easy to use; Dissolves slowly for a steady application of chlorine to your indoor or outdoor pool for up to a week; sun protected
•INCLUDES: One 5-pound pail of Chlorinating Tablets for swimming pools

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$60.99

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