Top 10 Best ph down for pools in 2026

Last Updated - 6/7/2026

🏆Best Choice

Clorox Pool & Spa

Clorox® Pool&Spa™ Swimming Pool pH Down, Lowers pH, Protects Against Eye and Skin Irritation, 5LB (Pack of 1)

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•Lowers High pH: Clorox Pool&Spa Swimming Pool pH Down is formulated to restore neutral pH in pool water. By decreasing pH levels, it helps restore water parameters to their ideal ranges, ensuring a balanced and healthy swimming environment.
•Protects From Scale - This product provides protection against scale buildup in your pool, offering a safer and easier alternative to using Muriatic acid. Ideal for all pool types, it features an easy-pour design and splash-free application.
•Protects Pool Equipment from Corrosion: By keeping your pool's pH level balanced, this product helps prevent equipment corrosion, allowing you to spend less time maintaining and more time enjoying your swimming pool.
•Preserves Pool & Equipment - Unbalanced water can cause a corrosive environment that damages your pool surfaces or equipment. This product reduces pool maintenance, extending the life of your pool'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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$8.97

$10.99

-18%

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Clorox Pool & Spa

Clorox® Pool&Spa™ Swimming Pool pH Up, Raises pH, Protects Against Eye and Skin Irritation, 4LB (Pack of 1)

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•Raises Low pH: Clorox Pool&Spa Swimming Pool pH Up is formulated to elevate the pH levels in swimming pool 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 swimmer 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 swimming experience.
•Protects Pool Equipment from Corrosion: By keeping your pool's pH level balanced, this product helps prevent equipment corrosion, allowing you to spend less time maintaining and more time enjoying your swimming pool.
•Preserves Pool & Equipment - Unbalanced water can cause a corrosive environment that damages your pool surfaces or equipment. This product reduces pool maintenance, extending the life of your pool'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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$8.97

$9.99

-10%

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Arm & Hammer

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

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

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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Clorox Pool & Spa

Clorox® Pool&Spa™ Swimming Pool Alkalinity Increaser, Keeps pH Balanced, 5LB (Pack of 1)

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•For Raising Total Alkalinity: The Alkalinity Increaser helps maintain balanced pH levels in your pool water. Proper alkalinity levels reduce the need for frequent maintenance, and our product's granulated formula is easy to apply and dissolves quickly.
•Improves Swimmer Comfort: This product plays a crucial role in enhancing swimmer comfort by preventing eye and skin irritation caused by unbalanced pH. It helps prevent dry, itchy skin and red, burning eyes, ensuring a more pleasant swimming experience.
•Protects Pool Equipment from Corrosion: By keeping your pool's pH level balanced, this product helps prevent equipment corrosion, allowing you to spend less time maintaining and more time enjoying your swimming pool.
•Perfect for All Pools: Clorox Pool&Spa Swimming Pool Chlorine Stabilizer is perfect for new pools, freshly refilled pools and pools that use liquid chlorine.
•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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$10.94

$12.99

-16%

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HTH

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

9.2

ChoiceComparer.com Score

9.2

/ 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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In The Swim

In The Swim pH Reducer for Swimming Pools, Spas, and Hot Tubs - Lowers Alkalinity - Prevents Cloudy Water - Balances Water - 90% Sodium Bisulfate - 30 Pounds

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•pH Reducer lowers Total Alkalinity and pH for a safer swimming experience in pools, spas, and hot tubs.
•Enhances chlorine effectiveness, prevents damage to pool equipment and swim gear by lowering alkalinity and pH.
•Healthy pH ensures enjoyable pool water all summer.
•Corrects pool pH to prevent skin irritation and equipment damage.
•Ideal pH for swimming pools falling in the range of 7.2 to 7.6.

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$74.99

$79.99

-6%

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HTH

HTH 67058 Swimming Pool Care pH Up, Raises pH, Swimming Pool Chemical, 4 Lbs

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•BENEFITS: Increase and balance the pH levels in your swimming pool water for beautiful clarity, improved chlorine efficiency and overall healthy swimming
•PREVENTS STAIN & SCALE: Balanced pH levels help prevent corrosion of pool surfaces
•IMPROVES SWIMMER COMFORT: Properly balanced pH levels help prevent eye and skin irritation
•SWIM IMMEDIATELY: Once pH is property balanced, swimmers can jump right back in the water; Compatible with all swimming pools
•YOU'RE ALL CLEAR WITH HTH: For best results, use HTH 6-Way Test Strips weekly to test, balance and maintain pH levels between 7.2 and 7.8 ppm; Features a resealable pouch for easy storage

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$9.40

$13.00

-28%

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HTH

HTH Pool Care pH Down, Lowers pH, Swimming Pool Chemical, 5 Lbs

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•BENEFITS: Lower and balance the pH levels in your swimming pool water for beautiful clarity, improved chlorine efficiency and overall healthy swimming; Helps chlorine to work efficiently
•PREVENTS STAIN & SCALE: Balanced pH levels help chlorine to work efficiently and prevent scale formation on pool surfaces and equipment
•IMPROVES SWIMMER COMFORT: Balanced pH levels help prevent eye and skin irritation; Also prevents surface damage
•SWIM IMMEDIATELY: After pH Down application, swimmers can jump right back in the water; Compatible with all swimming pools
•YOU'RE ALL CLEAR WITH HTH: For best results, use HTH 6-Way Test Strips weekly to test, balance and maintain pH levels between 7.2 and 7.8 ppm

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$15.16

$17.00

-11%

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Doheny's

Doheny's pH Minus | pH Down for Pools | Sodium Bisulfate Dry Acid | Fast Acting pH Reducer | Pool Water Balancer | Pro Strength | Works in All Pool Types | Proudly Made in USA | 30 lb

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•Proudly Made in America – Essential Pool Care: Trusted for over 50 years, Doheny’s family-owned brand helps maintaining perfect pH levels to create a well-balanced, comfortable swimming environment.
•Multi-Purpose pH Minus: Lowers pH to enhance the effectiveness of all your pool chemicals.
•Benefits of Properly Balanced pH: Lowers high pH while minimizing equipment corrosion, eye irritation, and skin dryness.
•Premium-Grade Formula: Made with high-quality sodium bisulfate (dry acid) for reliable results.
•Convenient Packaging: Available in 5- and 10-lb pouches or a 30-lb bulk bucket.

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$67.49

$74.99

-10%

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Robelle

Robelle 6-Pounds Premium pH Down for Pools, Concentrated Sodium Bisulfate, Made in USA

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•Sodium Bisulfate for pools
•Rapidly Decreases pH
•Proper water balance helps reduce skin and eye irritation
•Adjust and maintain pH at 7.2-7.6

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$21.78

$29.99

-27%

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