Copper stains in pool interiors most often appear as a light (mint) green or a light brown/grey stain on the walls and floor.

Also, because copper stains can look similar to algae stains, some people will shock dose their pool with chlorine which then oxidizes the copper staining. This turns the copper stain 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. Importantly, copper stains are the same in colour or appearance and this often leads 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
Copper stains 3
Copper Stains in Swimming Pools The Pool Stain Removers 1
Copper stains 6

Copper stains in pool – likely causes

Copper staining occurs when copper is introduced into the pool from sulphate blocks, copper and silver systems, low-quality pool salts or copper-based algaecides. All of these products add invisible copper ions to 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

Copper stains can be completely removed using our treatments on any pool finish including Pebblecrete, Quartzon, fibreglass, glass bead or fully tiled pools. As the images show, we can remove copper stains from swimming pool surfaces without draining the pool water. If you have substantial copper staining you may want to also consider our CuLator Metal Eliminator to physically remove the residual copper from the pool to prevent the stains from returning.

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 $405 for pools 40,000+ Litres


Enquire now!

Removing copper from pool water

Customers with large copper stains should consider using CuLator Metal Eliminator in addition to our treatment. This product will remove copper 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. Also, 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.

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**IMPORTANT NOTE: We are able to remove almost all 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 into the concrete pool interior. Therefore, in some cases, heavy copper stains can discolour a pool interior permanently. So, 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. Also, very heavy copper staining may require two full treatments to be removed.