SpaChoice Calcium Hardness Increaser, 1-Quart

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To enhance the calcium hardness in spas and hot tubs with low levels of hardness, this product is specially formulated. Low levels of hardness can cause damage to the plaster and equipment through etching and corrosion. Therefore, before adding this product, it is important to test the water with a calcium hardness test kit or consult your local spa dealer. The recommended hardness level should fall between 200-400 ppm (parts per million).

To determine the appropriate amount of the product to be added, utilize a calcium hardness test kit. Once measured, pour the correct amount into the spa or hot tub while the equipment is turned on. To ensure proper distribution, run the filter for 1-2 hours. After 20 minutes, the water can be retested to determine if the desired hardness level has been achieved.

Customers favor this liquid product due to its ease of use compared to granular alternatives.

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