Raises calcium hardness levels to prevent corrosion that "soft" water can cause.
- SpaGuard Spa Calcium Hardness Increaser 12oz
- 1 tbs. 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
- Calcium Hardness Increaser