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How Do I Remove Rust Stains From My Pool?

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Rust stains in your swimming pool are unsightly and can be stubborn to remove. They may also indicate underlying issues with your pool equipment or water chemistry.


Algaefree Australia specialises in products that help pool owners tackle rust problems with effective solutions that restore pool surfaces to their original condition.




Why Do Rust Stains Appear in Pools?

Rust stains typically appear as reddish-brown discolouration on pool surfaces and can stem from several sources:

  • Metal objects accidentally dropped into the pool (hairpins, toys, tools)

  • Corroding metal pool components (ladders, handrails, light fittings)

  • Iron content in source water, particularly from bore water

  • Metal equipment in contact with pool chemicals

  • Deteriorating internal pool equipment, like heaters or pumps



Identifying Rust Stains

Before treatment, confirm you're dealing with rust rather than algae or other stains. Rust stains:

  • Appear as reddish-brown or orange marks

  • Don't brush off easily

  • Often form in specific patterns related to metal contact

  • May reappear in the same location if the source isn't addressed



Effective Rust Stain Removal


Step 1: Test and Balance Your Water

Start by testing your pool water chemistry. Imbalanced pH levels can contribute to metal oxidation and make stain removal more difficult. Aim for:

  • pH between 7.2 and 7.6

  • Total alkalinity between 80-120 ppm

  • Calcium hardness between 200-275 ppm


Step 2: Apply a Specialised Rust Remover

Our Stain Removal products are specifically formulated to dissolve rust stains without damaging pool surfaces. For best results:

1. Apply directly to the stained area

2. Allow the product to work for the recommended time (usually 10-15 minutes)

3. Gently scrub with a non-abrasive brush

4. Rinse thoroughly


For stubborn stains, a second application may be necessary.


Step 3: Prevent Future Staining

Once you've removed the stains, take preventative measures:

  • Add a metal sequestrant to your regular pool maintenance routine

  • Remove metal objects from the pool promptly

  • Inspect and maintain metal pool components regularly

  • Consider using a pre-filter when filling your pool with bore water

  • Install sacrificial anodes if metal staining is a recurring issue



Regular pool maintenance and prompt attention to rust stains will protect your pool surfaces and equipment from long-term damage. With the right products and techniques, most rust stains can be effectively eliminated. Visit the Algaefree Australia website to find the right product for your pool.


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