Spa Defence 500mL

Protect your spa from scale, staining and water discolouration with BioGuard Spa Defence 500mL. This specialist spa treatment helps prevent calcium and magnesium from forming scale on spa surfaces, pipes, filters and heaters. It also helps prevent metals such as copper, iron and manganese from staining surfaces or changing water colour. Regular use can help protect your spa equipment and improve heater efficiency. BioGuard Spa Defence also removes some fresh metal stains without requiring a spa drain. Add 30 mL per 1,000 litres once a week, then run the pump for at least four hours.