How to remove copper stains from pool

PROBABLY NOT WHAT YOU THOUGHT: Removing copper stains from pool walls and surfaces can be a bit of a challenge. Usually, these obstructions create an acidic environment that is difficult to remove with traditional stain removal methods. But don’t give up yet! There are several ways to tackle this pesky task.

When copper starts to accumulate from corrosion in pools and spas, it can create a variety of undesirable effects. This metallic compound reacts with other molecules in the water to form dangerous byproducts. These pollutants can discolor pool surfaces and even damage the fabric membrane that separates the water from the structure.

There are several effective methods for cleaning copper stains from pool surfaces. Here are two examples: using acids and using chelating agents. acid-based cleaners strip away the surface padLinux Copper Stain Removal Tips chelating agents bind with copper ions and pull them out of the solution.

remove copper stains from pool

Copper stains can be a frustrating problem for pool owners. These stains often appear as greenish or bluish patches on the pool’s surface, giving it an unappealing look. However, with the right techniques and products, you can successfully eliminate copper stains and restore the beauty of your pool.

Causes of Copper Stains in Pools

Before we delve into the removal methods, it’s essential to understand why copper stains occur in the first place. Copper-based algaecides, corroded plumbing, and high levels of metals in the water supply are common culprits. Copper ions can react with other substances in the pool water, leading to staining. Identifying the source of copper contamination can help prevent future staining issues.

Preparation: Turning off the Pool Pump and Adjusting Chlorine and pH Levels

To begin the copper stain removal process, it’s crucial to turn off your pool pump system and bypass the timer. This prevents the circulation of water, allowing you to focus on treating the stained areas effectively. Additionally, you should lower the chlorine reading to less than 0.3 ppm. You can achieve this by using a chlorine neutralizer or abstaining from adding your sanitizer for a few days. Lowering the pH to 7.2 also facilitates the stain removal process.

Applying a Copper Stain Remover Product

One of the most effective solutions for removing copper stains is to use a specialized copper stain remover product. Super Stain Treat™ is a popular option that works well to eliminate copper stains. Follow the manufacturer’s instructions for the recommended dosage and application method. Apply the product directly to the stained areas and let it sit for the specified duration. This allows the stain remover to penetrate and dissolve the copper stains effectively.

Brushing the Affected Area

After applying the copper stain remover, it’s crucial to brush the affected area. Use a pool brush with nylon bristles or a stainless-steel brush to gently scrub the stained surface. This helps to dislodge any residual stains and allows the stain remover to work more effectively. Pay close attention to the stained areas and ensure thorough coverage during the brushing process.

Rebalancing the Pool Water

Once the stain remover has been applied and the affected area has been brushed, it’s essential to rebalance the pool water. Test the water’s pH and chlorine levels and make any necessary adjustments. This ensures that the water chemistry is optimal for maintaining a clean and stain-free pool. Regularly monitor and maintain the water balance to prevent future staining issues.

Additional Methods for Stubborn Stains

In some cases, stubborn copper stains may require additional treatment. If the stains persist even after applying a copper stain remover, you can try using a product like CuLator Metal Eliminator. This product helps to remove copper from the pool water after a treatment has removed the stains. For larger stains, ascorbic acid can be used. Sprinkle the acid evenly over the surface of the water, but keep in mind that it should only be used for larger stains.

Preventive Measures to Avoid Copper Stains

Prevention is always better than cure when it comes to pool maintenance. To prevent copper stains from forming in the first place, consider the following preventive measures:

  1. Maintain a proper pH balance: Regularly test and adjust the pH levels of your pool water to keep it within the recommended range.
  2. Use a sequesterant: Adding a sequestering agent to your pool water helps to bind metals and prevents staining.
  3. Use a chelated copper algaecide: When selecting an algaecide, opt for a chelated copper-based product, as it reduces the risk of staining.
  4. Avoid using well water: Well water often contains higher levels of metals, including copper. Minimize the use of well water in your pool.
  5. Avoid using copper-based algaecides: Consider alternative algaecide options that don’t contain copper to reduce the risk of staining.


Copper stains can be a common nuisance for pool owners, but with the right approach, they can be effectively removed. By following the outlined steps and using the recommended products, you can restore the pristine appearance of your pool. Remember to address any underlying issues that may be causing the copper stains to prevent future occurrences. With proper maintenance and preventive measures, you can enjoy a clean and inviting pool all year round.


  1. Can I use household bleach to remove copper stains from my pool?
    • No, household bleach is not effective for removing copper stains. It’s best to use a specialized copper stain remover product.
  2. How long does it take for a copper stain remover to work?
    • The duration may vary depending on the product. Follow the instructions provided by the manufacturer for optimal results.
  3. Will rebalancing the pool water eliminate copper stains?
    • Rebasing the pool water helps prevent future staining, but it may not remove existing copper stains. Follow the recommended stain removal methods.
  4. Can I use ascorbic acid for all types of stains?
    • Ascorbic acid is primarily suitable for larger stains. Use it as directed and consider other methods for smaller or lighter stains.
  5. Are copper stains harmful to swimmers?
    • Copper stains are primarily cosmetic and don’t pose a significant health risk. However, it’s important to maintain a clean and well-balanced pool for optimal safety.

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Camilo Kawas is a seasoned entrepreneur and expert in the field of commercial cleaning, with a specific focus on clothes, carpet cleaning and floor care. With a profound understanding of the importance of selecting the right products for effective stain removal from clothes, Camilo has established himself as a trusted authority in the industry.

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