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