Calcium Increaser is a granular calcium chloride that’s used to prevent corrosion of equipment and etching of plaster due to low calcium hardness in the spa water. 1 tablespoon of Calcium Increaser per 100 gallons will increase calcium hardness in the spa water 25 parts per million.
Directions For Use:
1. Apply appropriate amount of product. Broadcast into spa with the circulation system operating.
2. Do not pre-dissolve.
3. Brush up any granules that do not immediately dissolve.
4. Operate circulation system for 30 minutes after application.