Can I put copper in a pool skimmer? Reasons why it's not recommended

The allure of using copper in  pool skimmers  to combat algae growth is a tempting one, given copper's reputation as an algaecide. However, this approach is not without its drawbacks. Let's explore why adding copper directly to your pool skimmer might not be the best strategy for maintaining a clean and healthy swimming pool.

One of the most immediate signs of excessive copper in pool water is the discoloration of hair, particularly for those with light-colored or chemically treated hair. This green tint is not only unattractive but also a clear indication that copper levels are too high, which is a concern for both aesthetics and health.

While some algaecides contain copper, placing a copper tube in the pool skimmer is a different matter altogether. Copper-based algaecides are water-soluble and work by inhibiting photosynthesis in algae, leading to their death. Copper tubing, on the other hand, does not have the same effect and is more of a myth than a solution.

Copper is used in plumbing due to its antimicrobial properties, which prevent bacteria and viruses from growing inside the pipes. However, placing a copper tube in the pool skimmer will not prevent algae growth elsewhere in the pool. It's important to understand that copper tubing in plumbing does not equate to effective algae control in the pool.

Copper can cause staining and corrosion in pools, especially when it comes into contact with pool surfaces and metal components. This can lead to costly repairs and aesthetic issues, undermining the very purpose of maintaining a pristine pool environment.

Excessive copper can be harmful to the health of swimmers and can also be toxic to aquatic life. High concentrations of copper can pollute the pool and pose health risks, especially through skin absorption during swimming.

Copper compounds for aquatic use are either manufactured as copper sulfate or as copper chelates. Both forms contain metal copper as the active ingredient, but chelated copper remains soluble and active in water for a longer period. Only copper products approved for aquatic environments should be used in water bodies.

Regular testing and proper pool chemistry maintenance are essential to manage copper levels. The maximum concentration of copper and iron in pool water should be about 1.0 ppm, with an ideal level of 0 ppm.

Approved commercial formulations for aquatic use should be used according to the manufacturer's instructions to control algae effectively and safely. These products are designed to target algae without causing the negative side effects associated with direct copper exposure.

Copper-based algicides may temporarily control algae and cyanobacteria but do not address the underlying causes of algal blooms. Treating harmful algal blooms can induce the release of toxins, which can be invisible to recreational users and pose a greater risk to aquatic life.

In conclusion, while copper has been traditionally used as an algicide, there are compelling reasons why placing copper in pool skimmers is not recommended. It can lead to staining, health risks, and environmental damage without effectively controlling algae. Instead, pool owners should rely on approved copper products, maintain proper pool chemistry, and address the root causes of algae growth to ensure a safe and clean swimming environment.