

HTH Spa Care Alkalinity Increaser — Granules, 1.25 lb — Pool and Spa Chemical to Raise Alkalinity and Balance Water
Key item features
- Alkalinity Balance: Raises total alkalinity in spa and hot tub water, helping to stabilize pH levels and prevent fluctuations for optimal water chemistry.
- Equipment Protection: Protects spa equipment and surfaces, including pumps, filters, and heaters, from potential damage caused by low alkalinity levels.
- Comfortable Water: Contributes to more comfortable water by protecting against skin and eye irritation, ensuring a pleasant spa experience.
- Spa Longevity: Prolongs the overall life of your spa by maintaining balanced water chemistry and safeguarding its components.
- Sanitizer Compatibility: Works effectively with all sanitizers, including bromine, chlorine, and biguanide systems, offering versatile use.
- Usage Instructions: Apply directly to spa water when total alkalinity measures below 80 ppm, following on-pack dosage instructions, and circulate for 1-3 hours.
Specs
- Chemical standard typeAlkalinity Increaser
- FormPowder
- OccasionSpa & Hot Tubs
- Rec. useHot Tub
- Weight1.25 lb
- Size1.25 lbs
Reviews summary
- : Offers good product amount for cost.
- : Maintains stable levels throughout the day.
- : Made with materials that demonstrate high performance and durability.
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About this item
Product details
Low alkalinity levels in spa water can cause undue damage to surfaces and equipment. HTH® Spa Alkalinity Up not only raises the total alkalinity in your Spa & Hot Tub water, but it also helps keep the pH levels from fluctuating. This helps prolong the life of spa surfaces and equipment, like filter systems, and ensures healthy, comfortable water by protecting against skin and eye irritation. HTH® Spa Alkalinity Up is compatible with all sanitizers including bromine, chlorine and biguanide.
How To Use HTH® Spa Alkalinity Up Use HTH® Spa Test Strips to test your spa water. If the total alkalinity level measures below 80 ppm, apply HTH® Spa Alkalinity Up directly to your spa water. Refer to on-pack instructions for the correct dosage. Allow water to circulate for 1-3 hours. Test and repeat as needed to maintain total alkalinity levels between 80 and 120 ppm.
- Keeps total alkalinity and ph levels in range.
- Protects against skin & eye irritation.
- Protects spa equipment & surfaces.
- Creates more comfortable water.
- Prolongs the life of your spa.
- Compatible with all sanitizers
- Helps prevent damage to spa surfaces and equipment (pumps, filters and heaters).
- HTH® Spa Alkalinity Up works great with bromine, chlorine and biguanide systems.
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Customer ratings & reviews
Reviews summary
- : Offers good product amount for cost.
- : Maintains stable levels throughout the day.
- : Made with materials that demonstrate high performance and durability.
Customer images






+17 images
Showing 1-3 of 139 reviews
Verified Purchase
Really not sure about quality, as we have not used it yet and that wasn't an option. However, everything else was true.
Verified Purchase
I needed the pool supplies. Still waiting on the calcium.
Verified Purchase
I highly recommend.
Right solution great price. Arrived on time.
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