BAQUA SPA Calcium Hardness Increaser (14 oz) is designed to raise the calcium hardness of your hot tub water. Calcium Hardness levels should be maintained between 200-400 ppm.
4 ounces per 100 gallons of water to raise calcium 40 ppm.
- Test your water's calcium hardness every week with Baqua Spa Test Strips and adjust accordingly.
- Add appropriate amount of Baqua Spa Calcium Hardness Increaser as designated in table on bottle to maintain the spa water calcium hardness within the 200-400 ppm range.
- Circulate spa water at high speed for a minimum of 15 minutes.
Calcium Chloride: CAS# 10043-52-4
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