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Low levels of calcium assist in spa surface and equipment deterioration, SpaGuard Calcium Hardness Increaser raises calcium levels to the recommended range of calcium in the water 200 – 1,000 ppm.
Features:
1 tbs. per 100 gallons increases calcium hardness by 25 ppm
Prevents corrosion of equipment due to low calcium hardness
Prevents etching of plaster due to low calcium hardness