Copper stains in pools usually appear as a light (mint) green or a light brown/grey stain on the surface.

Because copper stains can look similar to algae, some people will shock dose their pool with chlorine.  When they do this it oxidizes the copper. Consequently, this turns the copper into a dark colour almost instantly. Remember, even without shock chlorination, copper stains in swimming pools will become darker and discoloured by dirt and other minerals over time. This can make them appear in various colours and shades on the pool surface. Remember, copper stains are the same in colour or appearance as algae, leading to incorrect diagnosis and treatment.

Signs of copper staining:

  • Coloured stain that won’t brush away
  • Stain getting worse over time
  • Stain slowly changing colour
  • Chlorine treatment makes stain darker
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Copper Stains in Swimming Pools The Pool Stain Removers 1
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Copper stains in pool – likely causes

Copper staining occurs when copper is introduced into the pool from products that contain copper.  These include sulphate blocks, copper and silver systems, low-quality pool salts or copper-based algaecides. In fact, all of these products add large quantities of invisible copper ions into your pool water. Remember, if residual copper is not properly removed or managed, staining can occur – particularly if the water pH exceeds 8.3. This rise in pH causes the suspended (floating) copper ions in the pool to ‘plate out’ or bond to the pool surface. This then causes discolouration in the form of a stubborn coloured stain.

Also, unbalanced water will strip the copper from pipework in pool heating or solar equipment and bring it into the pool water.

Remember, copper should be removed ASAP to prevent it from staining the pool. We can assist you in removing copper and other metals from your pool with CuLator Metal Eliminator

Products that will introduce copper:

  • Copper based algaecides
  • Low quality pool salt
  • Pool heater copper pipes
  • Copper sulphate blocks
  • Bore water
  • Chlorine free pool systems

Remove copper stains from pool – the easy way

We remove copper stains every day with our treatment from any pool finish including Pebblecrete, Quartzon, fibreglass, glass bead or fully tiled pools. As the images show, we remove copper stains from swimming pool surfaces without draining the pool water or acid washing. After removing the stains with our treatment, you should consider removing the copper from the water to help prevent it from restaining the pool. Remember, removing the copper is only effective after the stains have been removed.

If you are unsure of the type of stain you have please feel free to speak with us.

Copper stains from Chlorine
stain from magnapool salt
metal stains in pool
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OPTION 1 – Copper Stain Removal DIY kit

What We Do 1


pool stain removal


pool stain removal



  • 1 Litre of our powerful copper stain release and prevention formula
  • 4 Kgs of granular copper stain dissolving compound
  • Phone support from our technicians
  • Simple step-by-step instructions included
  • Pool does NOT need to be drained
  • Kit is tracked and delivered by Fastway Couriers
  • Kids are back in the pool in just 7 days
  • Kit is $295 for pools 40,000+ Litres


Enquire now!

OPTION 2 – Copper Stain Removal – On Site Technician


pool stain removal


pool stain removal



  • 1 Litre of our powerful copper stain release and prevention formula
  • 4 Kgs of our granular copper stain dissolving compound
  • Complete 7 point on-site water testing
  • Your pool does NOT need to be drained
  • Kids are back in the pool in 7 days
  • Visit is $455 for pools 40,000+ Litres


Enquire now!

Removing copper from pool water

Customers with large copper stains should consider using CuLator Metal Eliminator after our treatment has removed the stains. This product will remove copper ions from the water to help prevent the stain from reappearing later. Remember, our standard treatment will dissolve copper stains but will not physically remove all the copper from the water. Remember, common liquid metal treatments only ‘suspend’ rather than actually remove the copper from the water. CuLator Metal Eliminator is unique because it can physically remove copper from pool water. Finally, your pool shop will assist you in measuring the copper levels in your pool water.  So you need to get the copper out of the pool, not just control it.

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**IMPORTANT NOTE: We are able to remove almost all pool stain types. However, we strongly suggest that you act on copper stains as soon as they appear. Remember, if copper stains are left for longer than 1 – 2 years they can sometimes be absorbed deep into the pool interior. So in some cases, heavy copper stains can discolour a pool interior permanently. In these situations, copper staining may still be visible or reappear within a few weeks even if the pool is completely drained and acid washed. Furthermore, in some cases, very heavy copper staining may require two full treatments to be completely removed.