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Price: $4.95

Brilliance Calcium Hardness Increaser raises spa water to the recommended level of calcium hardness. All water contains some natural hardness, and it varies by geographic region. 

 

Calcium Hardness is the amount of dissolved calcium in your spa water.  The correct hardness range is 200–400 parts per million (ppm).

 

It is important to maintain the correct level of calicum hardness. High levels of calcium can erode pumps and cause damage to the internal workings of your spa. Watch that you don't get your calicum hardness TOO high, as there is no product to decrease the level of calcium hardness!