SpaGuard Calcium Hardness Increaser (12 oz)
SpaGuard Calcium Hardness Increaser add 1tbs. per 100 gallons to increase your hot tub calcium hardness 25ppm. Prevents corrosion of equipment and etching of plaster due to low calcium hardness.
Granular calcium chloride
1 tablespoon per 100 gallons increases calcium hardness 25ppm
Prevents corrosion of equipment due to low calcium hardness
Prevents etching of plaster due to low calcium hardness
Directions of use:
1. Apply appropriate amount of product as measured by an accurate testing method
2. Do not pre-dissolve
3. Brush up any granules that do not immediately dissolve
4. Operate circulation system for 30 minutes after application.