Check the listing for details. Sirona Spa Care - Calcium Booster (1 lb) (2 Pack). Condition: New. Listed at 29.99 USD. Sirona Spa Care - Calcium Booster (1 lb) (2 Pack)Part #82148/2New! Compatible with all Baqua Spa Chemicals.Product DetailsSirona Spa Care Calcium Booster efficiently increases calcium levels in spa water, preventing equipment corrosion and foam formation. This granular balancer is safe for use with various sanitizers, helping maintain a calcium range of 200-400 ppm for balanced water.Product Features:The calcium increaser for hot tub raises calcium hardness in spa water quickly, so you can focus on whole-self wellnessPrevents foaming and equipment corrosion for a clean, soothing spa experienceLiquid solution boosts calcium with this fast-acting and easy-to-use formulaCalcium increaser for hot tub keeps spa water between 150 and 400 ppm for clean, beautiful spa water you can relax inUnique liquid is compatible with chlorine, bromine, ozone and biguanide sanitizersDirections:Test your water's calcium hardness every week with the Sirona Test Strips and adjust accordingly.Add appropriate amount of Sirona Calcium Booster as designated by the table below to maintain the spa water calcium hardness within the 200-400 ppm range.Circulate spa water on high speed for a minimum of 15 minutes.An RMA/RGA is required to return all products Buyer pays all return shipping if item is not covered by warranty If you have any questions, please feel free to contact Clearview Fireplace and Patio We would be happy to helpDisclaimer: I will follow all applicable federal and state laws and regulations regarding the sale of the pesticideI won’t accept bids from, sell to, or ship to states in which the pesticide is not registered as a general-use product