$48.84 (as of 26/08/2018 12:20 PDT details )
Features:
- Increases Calcium Hardness in Spa Water
- Low hardness will etch plaster and corrode spa equipment
- The ideal hardness level is 200 400 ppm
- Use 1 oz per 500 gallons to increase hardness by 10 ppm
- Use a test kit or test strip to test your spa calcium levels
- Downloadable User Guide Available Under Product Information Technical Specifications