Green Water or Surface Algae

What this symptom may mean

Nutrients, sunlight, warmth, stable water and insufficient circulation can support algae. Colour alone does not identify the organism.

Information and testing priorities

• Photograph fixed locations; record area, depth, temperature and circulation; identify algae where possible; test nutrients where relevant.

Responsible treatment pathway

• Use the Puroxi algae bottle test and site map to evaluate suitable ultrasonic coverage, circulation and oxygenation. Source control may also be required.

Urgency

Prompt where water serves people or animals; urgent if harmful cyanobacteria are suspected.

What to send Puroxi

• Complete laboratory report and sampling date
• Source, intended use, volume, flow and photographs
• History of the symptom and existing equipment or treatment
• Required outcome and any applicable health, animal, process or discharge requirements

Important technical notice

Possible causes are not a diagnosis. Do not use this page to declare water safe, prescribe a chemical dose or delay emergency, health, veterinary or regulatory action. Testing and site-specific review are required.