BioGuard SPA™ Defence prevents staining and water discolouration from metals, and scale build-up from excessive calcium.

Product Features:

• 133g/L organic phosphonates.
• Prevents calcium and magnesiumions present in ‘hard’ water from precipitating out of solution.
• Helps to prevent staining from metals like copper, iron and manganese.

Benefits:

• Prevents scale build-up.
• Helps keep spa water clear.
• Removes some fresh metal stains.
• Protects spa surfaces.