Calcium Increaser - Mountain Hot Tub

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$ 9

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Low hardness levels will etch plaster and corrode equipment. The ideal hardness level is 200-400 ppm (parts per million). 1 ounce of product per 500 gallons increases hardness by about 10 ppm. 1. Determine amount of product to be added using a calcium hardness test kit. 2. Pour proper amount into spa or hot tub with equipment turned ON. 3. Run filter for 1-2 hours. 4. Water may be retested in 20 minutes. The ideal hardness level is 200-400 ppm 1 ounce of product per 500 gallons increases hardness by about 10 ppm
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