HEAVY METAL STAIN REMOVAL



Heavy Metal Stain - Iron, Copper or Manganese These metal stains are the result of heavy metals coming out of solution in the swimming pool. There will be a smooth discolouration on the pool surface. The colours will vary depending on which metal they are from. The colours are mainly green, blue, grey, rust, purple and black. Though the colours are different the treatment is the same.

Heavy metal stains can be caused by the following:

  • Metals in the source water.
  • Poor water balance causing corrosion in the pool environment.
  • Metals from a chemical added to the pool (copper algaecide).
  • Metals from a device (ionizer) added to the pool.
  • Metal inadvertently falling into the pool.
  • Galvanic corrosion in the pool environment.
  • Erosion of metal surfaces in the pool environment.
     

Heavy metal stains can be easily removed from pool surfaces. The ease of removal is related to how long the stains have been on the surface and how porous the surface is. The newer the stain and the smoother the surface the easier it will be to remove it.


  1. Add fresh water to the swimming pool. Bring water above normal levels.
  2. Adjust water balance and pH to 7.0.
  3. Add 1 litre of MSR per 40,000 litres of pool water.
  4. Brush stains daily during treatment.
  5. Monitor and maintain pH at 7.0.
  6. Backwash sand filter daily to remove captured metals.
  7. Remove metals from cartridge and D.E filters with FILTER-NU.
  8. Repeat MSR treatment and continue brushing for stains not removed in one week.
  9. Return pH to the proper range 7.4 to 7.6.
  10. For stain prevention add 50 mls. of MSR per 10,000 litres of pool water per week. If source water contains more than 0.1 ppm of iron, copper or manganese, add 100 mls. of MSR per 10,000 litres of pool water.

NOTE:  DO NOT SUPERCHLORINATE OR SHOCK POOL PRIOR TO OR DURING STAIN REMOVAL TREATMENT!

NOTE: METAL STAINS AGED INTO CONCRETE POOL SURFACES MAY REQUIRE ACID WASHING.


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