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Natural Chemistry Spa Calcium Hardness Increaser - 1.83 lb

$6.49

SKU: NC04205
Natural Chemistry’s Spa Calcium Increaser is used to raise calcium hardness in spa water. Calcium hardness in spa water should be maintained between 150-250 ppm. Low calcium hardness levels could cause the spa water to be corrosive which may result in damage to the spa surface or equipment.  
Natural Chemistry Spa Alkalinity Increaser - 2.71 lb

$8.99

SKU: NC04204
Natural Chemistry’s Spa Alkalinity Increaser is used to raise total alkalinity in spa water. Total alkalinity in spa water should be maintained between 80- 120ppm. As a result of the buffering effect of total alkalinity, pH, bather comfort, water balance, and clarity are more easily maintained.  
Natural Chemistry Spa pH Decreaser - 3.37 lb

$7.99

SKU: NC04203
Natural Chemistry's Spa pH Decreaser lowers the pH of water in spas. Spa water should be maintained between a pH of 7.2 and 7.6. When pH is too high (above 7.6), water becomes uncomfortable to bathers, sanitizers lose their efficiency, water may become cloudy and scale forms more readily.  
Natural Chemistry Spa pH Increaser - 2.49 lb

$9.99

SKU: NC04202
Natural Chemistry's Spa pH Increaser raises the pH of water in spas. Spa water should be maintained between a pH of 7.2 and 7.6. Maintaining spa water pH in recommended ranges is key to proper water balance.