RAISES CALCIUM HARDNESS TO IDEAL LEVELS FOR HOT TUBS WITH SOFT WATER!
Leisure Time® Calcium Booster increases the hardness of the water which helps to entend the life of your spa and prevent equipment damage. Low calcium hardness can cause corrosion of your spa's plumbing, heating, stain your spa's surface and increase hot tub foaming. When the calcium hardness level of your spa or hot tub water drops below 200 ppm, just add Calcium Booster hardness increaser as needed.
Directions: One ounce of Calcium Booster raises calcium hardness 7ppm in 500 gallons of hot tub water. The ideal range is 150-400ppm. Test the water to determine how much increase is required. Add this amount and circulate 1-2 hours. Retest and repeat as needed.