- 133g/L organic phosphonates.
- Prevents calcium and magnesium ions present in Ã¢â‚¬ËœhardÃ¢â‚¬â„¢ water from precipitating out of solution.
- Helps to prevent staining from metals like copper, iron and manganese.
BioGuard SPA Defence prevents staining and water discolouration from metals, and scale build-up from excessive calcium.
- Prevents scale build-up.
- Helps keep spa water clear.
- Removes some fresh metal stains.
- Protects spa surfaces.