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Increases the Calcium Hardness level in spa and hot tub water. Water that is low in calcium can corrode equipment, etch concrete and grouted surfaces, and provide an environment favourable to algal growth.
The Calcium Hardness level of a spa and hot tub should always be maintained between 200 and 275 ppm for concrete and tiled spas and hot tubs, and between 175 and 225 ppm for other surfaces. Use a test kit to measure calcium hardness.
Any advice or suggestions above, including but not limited to instructions and dosing rates are intended to be a guide only. Spa Store and its staff recommend you read the full instructions on all chemical containers.
We will not accept responsibility for the use of these products.
Spa chemicals cannot be shipped to a Post Box. Please provide a physical address during checkout.
Still not sure this is the correct chemical? Contact us.
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