• Freshwater pH/ Alkalinity Up

Freshwater pH/Alkalinity Up

Why is pH & Alkalinity Important?

Hot tub water’s pH is the most important component of water balance next to the sanitizer. It determines how acidic or basic your water is. When the pH goes out of the proper range it can cause a lot of problems and even damage your spa. Unbalanced pH can cause your sanitizer (Chlorine, Bromine, biguanide) to not work properly, corrosion of internal part such as heaters and gaskets, scale formation and more. pH should be maintained between 7.2 and 7.8. Keeping your spa’s alkalinity in the proper range prevents the water from shifting in pH.

When do I use Freshwater pH/Alkalinity Up?

First test your spa’s water levels regularly using Freshwater 5 way test strips to determine if your spa’s pH and alkalinity need to be adjusted. Use this product if the pH/Alkalinity levels are low, as the Freshwater pH/Alkalinity Up raises your spa water’s pH and alkalinity levels. This product should be used with the Freshwater Water Care System, Freshwater Salt System, and Hot Spring ACE Salt System.

What if I need to lower my pH/Alkalinity?

To reduce spa water pH and Alkalinity when they get too high use pH/Alkalinity Down.


Additional information

Weight 1.5 lbs
Dimensions 2.375 × 2.375 × 7.875 in


Spa Chemical Type

pH & Alkalinity Products

Spa Chemical System

Freshwater – Chlorine System, Freshwater – Salt Water System

Freshwater pH/Alkalinity Up

Raises spa water pH and Alkalinity levels. Used with the Freshwater Water Care System.


28 in stock (can be backordered)

Deliver Every:

28 in stock (can be backordered)

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