Best PH and Alkalinity Increaser for Hot Tub in 2025
Updated on July 2025
#1
Recommended
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- Protects equipment from corrosion caused by low pH
- Balances water chemistry for enhanced bather comfort
- Prevents corrosion in spas and hot tubs due to low pH levels
- Dry, granular formulation for gradually increasing pH levels
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- Protects equipment from corrosion caused by low pH
- Balances water chemistry for enhanced bather comfort
- Prevents corrosion in spas and hot tubs due to low pH levels
- Dry, granular formulation for gradually increasing pH levels
#2
Value for Money
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- Ideal total alkalinity ranges from 80 to 140 ppm
- Add 1 ounce and check every 30 minutes until levels are reached
- Increases total alkalinity and stabilizes pH levels
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- Ideal total alkalinity ranges from 80 to 140 ppm
- Add 1 ounce and check every 30 minutes until levels are reached
- Increases total alkalinity and stabilizes pH levels
#3
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- Helps raise and maintain total alkalinity in pool water for balanced pH levels.
- Enhances swimmer comfort by reducing eye and skin irritation linked to unbalanced pH.
- Prevents corrosion of pool equipment by maintaining pH stability, minimizing maintenance efforts.
- Suitable for all types of pools, including new and freshly refilled ones.
- Utilizes Clorox Pool App for expert testing and personalized product recommendations.
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- Helps raise and maintain total alkalinity in pool water for balanced pH levels.
- Enhances swimmer comfort by reducing eye and skin irritation linked to unbalanced pH.
- Prevents corrosion of pool equipment by maintaining pH stability, minimizing maintenance efforts.
- Suitable for all types of pools, including new and freshly refilled ones.
- Utilizes Clorox Pool App for expert testing and personalized product recommendations.
#4
10% Off
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- Elevates pH Levels: Formulated to raise pH levels in swimming pool water for optimal water balance.
- Enhances Comfort: Reduces eye and skin irritation for a more enjoyable swimming experience.
- Prevents Equipment Corrosion: Maintains balanced pH to protect pool equipment from damage.
- Extends Pool Life: Helps preserve pool surfaces and reduces maintenance needs due to unbalanced water.
- Clorox Pool App: Access expert testing and personalized product recommendations from anywhere.
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- Elevates pH Levels: Formulated to raise pH levels in swimming pool water for optimal water balance.
- Enhances Comfort: Reduces eye and skin irritation for a more enjoyable swimming experience.
- Prevents Equipment Corrosion: Maintains balanced pH to protect pool equipment from damage.
- Extends Pool Life: Helps preserve pool surfaces and reduces maintenance needs due to unbalanced water.
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#5
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- 1 tablespoon treats 100 gallons and increases total alkalinity by 25 ppm
- Prevents fluctuations in pH levels
- Protects against corrosion and damage to equipment and spa surfaces
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- 1 tablespoon treats 100 gallons and increases total alkalinity by 25 ppm
- Prevents fluctuations in pH levels
- Protects against corrosion and damage to equipment and spa surfaces
#6
17% Off
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- 2 lbs container of total Spa Alkalinity Increaser for maintaining optimal water balance in spas.
- Quickly raises alkalinity levels and stabilizes pH for spa water with easy application.
- Prevents corrosion and irritation by maintaining appropriate alkalinity levels in hot tubs and spas.
- Helps manage pH fluctuations for a clean and safe spa experience.
- Manufactured in the USA, ensuring consistent quality for effective water treatment.
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- 2 lbs container of total Spa Alkalinity Increaser for maintaining optimal water balance in spas.
- Quickly raises alkalinity levels and stabilizes pH for spa water with easy application.
- Prevents corrosion and irritation by maintaining appropriate alkalinity levels in hot tubs and spas.
- Helps manage pH fluctuations for a clean and safe spa experience.
- Manufactured in the USA, ensuring consistent quality for effective water treatment.
#7
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- Balances pH levels in spa or hot tub water for clearer water and enhanced sanitizer effectiveness
- Enhances sanitizer performance and helps prevent corrosion of spa surfaces and equipment
- Contains mineral crystals for a more soothing spa experience
- Compatible with all spa types, including bromine, chlorine, and biguanide systems
- Recommended to use HTH Spa Test Strips twice weekly to maintain pH levels between 7.2 and 7.8 ppm
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- Balances pH levels in spa or hot tub water for clearer water and enhanced sanitizer effectiveness
- Enhances sanitizer performance and helps prevent corrosion of spa surfaces and equipment
- Contains mineral crystals for a more soothing spa experience
- Compatible with all spa types, including bromine, chlorine, and biguanide systems
- Recommended to use HTH Spa Test Strips twice weekly to maintain pH levels between 7.2 and 7.8 ppm
#8
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- Maintain optimal water balance in your hot tub with essential chemicals including pH Up, pH Down, alkalinity adjusters, and calcium hardness products.
- Convenient starter kit for hot tub maintenance, providing all necessary chemicals for regular upkeep.
- Use pH adjusters and alkalinity control products to keep your pool free from algae and maintain balanced water chemistry.
- Comprehensive start-up kit for hot tubs or pools, featuring essential chemicals for smooth operation, including alkalinity and pH adjusters.
- Prevent metal scaling and corrosion by ensuring proper alkalinity levels in your pool or spa, monitored with test strips.
- Kit includes 1.5 lb pH Down, 1 lb pH Up, 1 lb hardness increaser, 1 lb alkalinity increaser, and 1 pint of defoamer.
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- Maintain optimal water balance in your hot tub with essential chemicals including pH Up, pH Down, alkalinity adjusters, and calcium hardness products.
- Convenient starter kit for hot tub maintenance, providing all necessary chemicals for regular upkeep.
- Use pH adjusters and alkalinity control products to keep your pool free from algae and maintain balanced water chemistry.
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#9
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- Use if pH is below 7.2
- Add 1 ounce, retest every 30 minutes until pH is 7.2-7.8 and total alkalinity is 80-140 ppm
- Designed to raise pH levels in spa water
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- Use if pH is below 7.2
- Add 1 ounce, retest every 30 minutes until pH is 7.2-7.8 and total alkalinity is 80-140 ppm
- Designed to raise pH levels in spa water
#10
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- Maintains balanced water chemistry in hot tubs by raising alkalinity and stabilizing pH for clear and clean water.
- Compatible with various hot tub systems including chlorine, bromine, and mineral purifiers, suitable for units up to 2000 gallons.
- User-friendly application allows for easy addition during water checks, making spa maintenance quick and efficient.
- Provides clear instructions for precise alkalinity adjustments, ensuring consistent water quality without complications.
- Developed by a trusted brand with over 30 years of experience in spa products, ensuring reliable performance and quality.
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- Maintains balanced water chemistry in hot tubs by raising alkalinity and stabilizing pH for clear and clean water.
- Compatible with various hot tub systems including chlorine, bromine, and mineral purifiers, suitable for units up to 2000 gallons.
- User-friendly application allows for easy addition during water checks, making spa maintenance quick and efficient.
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