Shield is a granular product designed to increase the calcium hardness of spa water when it’s too low. Should be broadcast directly into the body of water in the spa.
Generally used when town supply water is too soft or when using rain water.Prevents etching and corrosion.
Features:
- Minimum 740g/kg calcium chloride.
- Increases calcium.
- Helps prevent corrosion of equipment.
- Helps prevent etching.
- Classified as Non-Dangerous Good.



