Calcium Hardness Increaser - 1lb

SPA CALCIUM HARDNESS INCREASER RAISES HARDNESS TO IDEAL LEVELS! FOR AREAS WITH SOFT WATER! Low calcium can cause corrosion of your spa's plumbing and heating, and stain your spa's surface. When the calcium level of your spa water drops below NP113

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SPA CALCIUM HARDNESS INCREASER RAISES HARDNESS TO IDEAL LEVELS! FOR AREAS WITH SOFT WATER! Low calcium can cause corrosion of your spa's plumbing and heating, and stain your spa's surface. When the calcium level of your spa water drops below 200 ppm, just add Calcium Hardness Increaser as needed.