Sea Klear Calcium Hardness Increaser

Sea Klear Calcium Hardness Increaser raises the calcium-hardness level in hot tub water. The original product guidance recommends maintaining calcium hardness between 150 and 250 ppm.

Water with insufficient calcium hardness can become corrosive and may damage hot tub surfaces or equipment. Test the water before adding this product. Dose according to the label directions, circulate the water, and retest before making another adjustment.