Top 10 Best spaguard ph increaser in 2026

Last Updated - 6/13/2026

🏆Best Choice

SpaGuard

SpaGuard Balance pH Increaser for Spas & Hot Tubs, 18 oz (1.12 lbs/510 g)

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Protects corrosion of equipment due to low pH
•Balances water for bather comfort
•Protects your spa or hot tub from corrosion due to low pH
•SpaGuard pH Increaser is a dry, granular product that gradually raises your pH level

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$13.99

$16.99

-18%

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SpaGuard

SpaGuard Spa Total Alkalinity - 2 Lb

9.6

ChoiceComparer.com Score

9.6

/ 10

Outstanding

Main highlights

•1 tbs. per 100 gallons raises total alkalinity 25ppm
•Eliminates "pH bounce"
•Helps prevent equipment and spa surface corrosion and damage

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$16.00

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HTH

HTH Spa 86133 pH Up, Spa & Hot Tub Chemical Raises pH, Prevents Corrosion, 2 lbs

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•BENEFIT: Increases and balances the pH levels in your spa or hot tub water for beautiful clarity, improved sanitizer efficiency and a more relaxing experience
•IMPROVES PERFORMANCE: Allows sanitizer to work more effectively; Prevents corrosion of spa surfaces and equipment
•CONTAINS MINERAL CRYSTALS: HTH Spa pH Up is formulated to provide a more relaxing spa experience
•COMPATIBLE WITH ALL SPAS: HTH Spa pH Up is great for all spas, including bromine, chlorine and biguanide
•YOU'RE ALL CLEAR WITH HTH: For best results, use HTH Spa Test Strips twice a week to test, balance and maintain total pH levels between 7.2 and 7.8 ppm

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$14.98

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HTH

HTH Spa 86132 pH Down, Spa & Hot Tub Chemical Lowers pH, Prevents Scale, 2.5 lbs

9.3

ChoiceComparer.com Score

9.3

/ 10

Excellent

Main highlights

•BENEFIT: Decrease and balance the pH levels in your spa water or hot tub for beautiful clarity, improved sanitizer efficiency and a more relaxing experience
•IMPROVES PERFORMANCE: Allows sanitizer to work more effectively; Prevents scaling of spa surfaces and equipment
•CONTAINS MINERAL CRYSTALS: HTH Spa pH Down is formulated to provide a more relaxing spa experience
•COMPATIBLE WITH ALL SPAS: HTH Spa pH Down is great for all spas, including bromine, chlorine and biguanide
•YOU'RE ALL CLEAR WITH HTH: For best results, use HTH Spa Test Strips twice a week to test, balance and maintain total pH levels between 7.2 and 7.8 ppm

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$7.89

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SpaGuard

SpaGuard Spa Water Clarifier - 1 Pint, Packaging may vary

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•Helps clear cloudy water
•Does not affect pH
•Combines small particles into larger ones for easier filtration

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$12.99

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HTH

HTH Spa 86131 Alkalinity up, Spa & Hot Tub Chemical Raises Alkalinity, Stabilizes pH Fluctuation, 1.25 lbs

9.0

ChoiceComparer.com Score

9.0

/ 10

Great

Main highlights

•BENEFIT: Easily raise the total alkalinity levels in your spa water to ensure it remains clear, clean, and healthy
•CREATES MORE COMFORTABLE WATER: Keeps the pH levels in range, which helps protect against skin and eye irritation
•PROLONGS THE LIFE OF YOUR SPA: Helps prevent damage to spa surfaces and equipment (pumps, filters, and heaters)
•COMPATIBLE WITH ALL SANITIZERS: HTH Spa Alkalinity Up works great with bromine, chlorine and biguanide systems
•YOU'RE ALL CLEAR WITH HTH: For best results, use HTH Spa Test Strips twice a week to test, balance and maintain total alkalinity levels between 80 and 120 ppm

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$6.70

$13.33

-50%

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Clorox Pool & Spa

CLOROX Pool&Spa 10018CSP Spa PH Up Pool Balancer, 18 oz.

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•Raise pH Level: Clorox Pool&Spa Spa pH Up is formulated to elevate the pH levels in spa water. By increasing pH levels, it helps in restoring water parameters to their ideal ranges, ensuring a balanced and healthy swimming environment.
•Improves Swimmer Comfort: This product plays a crucial role for bather comfort, as it prevents eye and skin irritation caused by low pH. It aids in preventing dry, itchy skin and red burning eyes for a more pleasant bather experience.
•Protects Pool Equipment from Corrosion: By keeping your spa's pH level balanced, this product helps prevent equipment corrosion, allowing you to spend less time maintaining and more time enjoying your spa.
•Preserves Pool & Equipment - Unbalanced water can cause a corrosive environment that damages your spa surfaces or equipment. This product reduces pool maintenance, extending the life of your spa’s cleanliness.
•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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$7.97

$9.99

-20%

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SpaGuard

SpaGuard Water Freshener - 16 oz

8.7

ChoiceComparer.com Score

8.7

/ 10

Good

Main highlights

•Eliminates odors in spa and hot tub water
•Makes spas and hot tubs smell fresh
•Gives spa owners a simple way to remove any unpleasant odors, while staying active in either chlorin
•SpaGuard Water Freshener works well with any sanitizer and eliminates odors

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$19.99

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SpaChoice

SpaChoice 1-Pound Premium pH Increaser for Hot Tub, 100% Sodium Carbonate, Made in USA

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•This product should be used if pH is below 7.2
•Add 1 ounce of this product and retest every 30 minutes until pH and total alkalinity are in the range of 7.2-7.8 and 80-140 ppm respectively
•This product is used to raise the pH in spa water

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$11.13

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