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Calcium hardness is a measurement of minerals in your spa water; low levels of calcium hardness could result in deterioration of metal and rubber components and create foam on your spa water surface. Increase your spa calcium hardness with our calcium carbonate formula that is made for hot water spas and hot tubs. Not only does Spa Calcium Increaser help keep your spa water crystal clear, it also helps prevent corrosion of spa equipment.
The ideal calcium hardness ranges for spas are 150 ppm for acrylic spas and 200 ppm for concrete spas or wood hot tubs; use Calcium Hardness Increaser when your waters calcium hardness level goes below the ideal range, and enjoy clearer, crisper water that doesnt feel oily, and wont develop foam as easily.