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Spa Chemicals - Calcium Hardness
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Spa Chemicals - Calcium Hardness

Raises calcium hardness to ideal levels in spas or hot tubs for areas of our country with soft water. Low calcium can cause corrosion of your spa or hot tub's plumbing and heating, and can stain your spa or hot tub's surface or shell. When the calcium level of your spa water drops below 200 ppm (parts per million), just add calcium hardness ...
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Raises calcium hardness to ideal levels in spas or hot tubs for areas of our country with soft water. Low calcium can cause corrosion of your spa or hot tub's plumbing and heating, and can stain your spa or hot tub's surface or shell. When the calcium level of your spa water drops below 200 ppm (parts per million), just add calcium hardness increaser as needed to rectify this problem.