Top 10 Best spa tablets for hot tub in 2026

Last Updated - 6/23/2026

🏆Best Choice

XtremepowerUS

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

9.8

ChoiceComparer.com Score

9.8

/ 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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$18.89

$19.95

-5%

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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

9.7

ChoiceComparer.com Score

9.7

/ 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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BROMIGUARD

BROMIGUARD Bromine Tablets 1 Inch 1.8 Lbs for Spa Hot Tub Chemical Sanitizer Bromine Tabs | Long-Lasting 1" Brominating Tablets for Pools | Less Chlorine Odor 1.8 Pounds

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•𝐓𝐑𝐔𝐒𝐓𝐀𝐁𝐋𝐄 𝐇𝐎𝐓 𝐓𝐔𝐁 𝐁𝐑𝐎𝐌𝐈𝐍𝐄 𝐓𝐀𝐁𝐒: 98% 1-bromo-3-chloro-5,5-dimethyl hydantoin, 61% available bromine and 29% available chlorine, using our hot tub bromine tabs to improve your swimming experience.
•𝐌𝐎𝐑𝐄 𝐄𝐗𝐂𝐄𝐋𝐋𝐄𝐍𝐓 𝐓𝐇𝐀𝐍 𝐂𝐇𝐋𝐎𝐑𝐈𝐍𝐄: Unlike chlorine, bromine has less odor, cause less eye and skin irritation. And bromine is more stable than chlorine at higher temperatures to remain effective, so you can use less tablets but get better results.
•𝐏𝐎𝐎𝐋 𝐇𝐎𝐓 𝐓𝐔𝐁 𝐀𝐍𝐃 𝐒𝐏𝐀 𝐒𝐀𝐅𝐄: Keep water clean and safe with our brominating tablets for your pool hot tubs and spas. They are not only as disinfectant but also can create a soft water feeling giving you maximum relaxation.
•𝐄𝐀𝐒𝐘 𝐀𝐏𝐏𝐋𝐈𝐂𝐀𝐓𝐈𝐎𝐍: Our hot tub bromine tablets are pre-stabilized so that they do not need to use other stabilizers. Just simply add the bromine tabs into the chlorinator or brominator for easy and convenient use.
•𝐏𝐋𝐄𝐀𝐒𝐄 𝐊𝐈𝐍𝐃𝐋𝐘 𝐍𝐎𝐓𝐄: The bromine tablet about 1 inches diameter, And each tablets weighs about 0.5 ounce, total about 54 pcs in one bucket. Please choose 4 lbs if you need more for money saving.

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$29.59

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HTH

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

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

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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Clorox Pool & Spa

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

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

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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MAV AquaDoc

AquaDoc Bromine Tablets for Hot Tub & Spa - 1.5lbs Sanitizing Bromine Recommended for Hot Tubs

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•Fast And Effective Bromine Tablets for Hot Tub - Say goodbye to dirt, clouds, and mold buildup in your hot tub. Simply use AquaDoc Spa Bromine Tablets for strong and effective results. Get clear, balanced water with our bromine tablets.
•One Stop Bromine Solution - Whether it's a hot tub or spa, our Bromine Tablets act as a disinfectant and sanitize your spa.They also create a soft water feel giving you maximum relaxation. Unlike chlorine tablets, Bromine tablets have less odor.
•Rapid Dissolving Spa Brominating Tablets - AquaDoc's bromine tablets rapidly dissolve into your water to work fast to help balance and sanitizer your water.
•Hot Tub Chlorine Tablets Alternative - Spa Bromin tablets act as an incredible alternative for Chlorine for Hot tub. Our spa sanitizing tablets specialize in preventing the mold build-up. They have less odor and are super easy to use.
•Bromine Tablets for Hot Tub Made in the USA - Choosing AquaDoc means choosing consistent quality. We take pride in manufacturing top quality products.

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$39.99

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hth Spa

HTH Spa 86109 Bromine Tablets, Chemical Sanitizer for Spas & Hot Tubs - Fits All Floaters for Easy Application, Creates Soft Water Feel, No Chlorine Odor, Eliminates Bacteria & Algae, 2 lbs

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•BENEFIT: Enjoy all the effectiveness of chlorine without the chlorine odor; Use these convenient tabs to sanitize your spa or hot tub water to keep it clean, clear, and ready for relaxation
•EASY APPLICATION: Fits all floaters for a quick and simple
•CREATES SOFT WATER FEEL: HTH Spa Bromine Tabs not only disinfect and sanitize your water, but they also create softer-feeling water for total relaxation
•COMPATIBLE WITH BROMINE SPAS: Unlike chlorine, bromine has less odor, so it won't irritate skin or bleach bathing suits
•YOU'RE ALL CLEAR WITH HTH: For best results, use HTH Spa Bromine Tabs as part of your regular HTH Spa care routine

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$33.24

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SpaGuard

SpaGuard Brominating Tablets - 1.5 lbs (1 Pack)

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Dissolve slowly and protect continuously
•Particularly good for commercial spas and other spas with big bather loads
•Can be used in a brominator or in a floating dispenser
•Dissolves slowly and protects continuously

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$37.99

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BROMIGUARD

Bromine Tablets for SPA Hot Tub 1lb 50LB Tabs Brominating Tablets Booster Eliminates Bacteria Algae Soft Water Feel No Chlorine Odor Chemical Sanitizer Chlorine Alternative (1 LB)

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•98% ACTIVE INGREDIENTS: BROMIGUARD bromine tabs contain 98% 1-bromo-3-chloro-5,5-dimethylhydantoin (BCDMH), with 61% available bromine and 29% available chlorine. Unlike hot tub chlorine tablets that lose strength in hot water, hot tub bromine tablets remain stable at high temperatures (35–40℃ / 95–104°F), making them ideal for spas and hot tubs.
•NO CHLORINE ODOR: Bromine tablets for spa hot tub have a gentler smell compared to hot tub chlorine tabs. The treated water will not leave behind a strong bleach tablets odor like spa chlorine tablets, making it more suitable for sensitive users and creating a more comfortable soaking experience.
•LONG-LASTING EFFECT: These spa bromine tablets dissolve slowly and last 5–7 days, providing continuous sanitation with fewer applications. They effectively kill bacteria, control algae growth, and help soften the water for enhanced comfort.
•EASY TO USE: Simply place the spa bromine tablets for hot tub into your floater or dispenser—no stabilizers needed. The bromine tablets 1 inch fit most spa and hot tub dispensers. Just check buoy size before purchase.
•EPA & NSF CERTIFIED: BROMIGUARD brominating tablets for hot tub meet U.S. EPA and NSF standards for safety and performance. For best results, regularly test your water to maintain a pH of 7.2–7.6 and keep brom levels within the recommended range.
•BETTER THAN CHLORINE FOR SPAS: Bromine for hot tub performs more effectively than chlorine tablets in hot tubs because bromine stays active in a wider pH range (7.0–8.4) and its byproducts (bromamines) still retain disinfecting power. This ensures consistently clean water without the harshness or inefficiency often found with hot tub chlorine.

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$18.79

$20.88

-10%

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SpaChoice

SpaChoice 1.5-Pounds Premium Brominating Tabs Sanitizer for Spas, Bromine Tablets for Spa Hot Tub, Made in USA

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Introduce 3 tablets per 300 gallons of spa water with the use of a floating tablet feeder
•Maintain spa by adding 3 tablets per 300 gallons every 5-7 days or as needed
•Before initially using this product in your spa or hot tub you will need to add 1/2 ounce of sodium bromide for each 100 gallons of water
•Bromine is an alternative to chlorine as a way to sanitize spa or hot tub water
•Bromine does not give off much of an odor compared to chlorine
•Bromine yields silky smooth water

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$37.20

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