Green or cloudy pool water

Overview

Green water often involves algae, but colour and cloudiness can also reflect metals, suspended material, poor filtration or an incomplete chemical correction. A clear pool also needs an operating sanitation and circulation system. Test before adding products.

Check first

• Check whether the floor and main-drain area are clearly visible.
• Test free chlorine and pH with a kit, or bring a fresh sample into the shop.
• Confirm pump flow, filter condition, chlorinator operation and the current schedule.
• Note the colour, wall feel, recent rain, heat, swimmer load, top-up water and chemicals already added.
• Photograph the pool in daylight before treatment so progress can be compared.

Stop and call a technician

• The floor cannot be seen clearly.
• There has been a faecal, chemical or unknown contamination event.
• The pump or chlorinator is not operating.
• Previous chemical additions are unknown or may have been mixed.
• Water does not respond to a measured treatment and filtration plan.

Related

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