Hot tub water needs a certain amount of calcium to support chemical balance. If the water’s calcium (hardness) is too low, it can cause damage to your hot tub. Damage occurs as the water pulls calcium out of the plumbing or heater to reach a balance. This product raises the water’s calcium hardness levels. Some salt systems are specifically designed to operate at lower levels. Be sure to check before using this product. Baqua Spa Water Care systems all operate between 200 and 400 parts per million of calcium hardness. Have your water tested by your local spa dealer or by using the Baqua Spas Five-Way Test Strips.

Additional information

Weight 1.1 lbs
Dimensions 2.5 × 2.5 × 8 in

Baqua Spa

Spa Chemical Type

Calcium Hardness Products

Spa Chemical System

Baqua Spa – Chlorine & Bromine Free

BAQUA SPA Calcium Hardness Increaser (93%)

Raises the calcium hardness of spa water for hot tubs being used in areas with softer water. Compatable with the Baqua Spa Water Care System.


Out of stock

Out of stock

SKU ARC88825 Category

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