Chlorine Shock Granules

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Chlorine Shock Granules

`A weekly shock dose is essential to ensure clean and healthy pool water`

Ideal for Shock Dosing the swimming pool water on a weekly basis after heavy bathing or as a preventative measure to ensure bacteria and organic contaminants are eliminated.

Rapid Dissolving Un-Stabilised Chlorine Shock Granule is ideal for raising Free Chlorine readings without having an impact on stabiliser reads (cyanuric acid).

 CLP Product Information Sheet


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5kg Shock

  • 5kg Shock
  • 1Kg Shock

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Shocking dose your pool is a critical process to make sure your pool has that crystal clean look! This process will raise the chlorine level by approximately 5 times, killing bad organics, unfilterable waste, algae and bacteria making your pool a safer environment for you and your family. Shocking dose your pool is important and should happen on a regular basis, ideally during the peak season on a weekly basis or sooner after heavy use of the swimming pool.

Swimming Pools

Chlorine Shock Granules are perfect for use in swimming pools. Shocking your pool should happen on a regular basis, but what do we mean by “regular”? Your shock treatment should take into consideration the amount of times your pool is being used and also the temperature of your pool water. To make sure you are shock dosing your pool at the correct time then it is important to check the chlorine levels in your pool

When should I use Shock?

We recommend that shocking should take place when the sun has gone down, the UV rays from the sun can affect the chlorine or other chemicals so this will ensure you are getting the maximum benefit from the chemical, the end of the weekend tends to be a popular time to shock dose the water.

Perfect water balance

It is important to get the perfect water balance, this can be done using a test kit if the chlorine and the free chlorine are below these levels then this means it is time to shock your pool. We recommend on shocking your pool at least weekly during the summer and then fortnightly during quieter periods


  1. Test the water for Free Chlorine using a CHLORINE TEST KIT.
  2. It is recommended swimming pool water is shock dosed after Heavy Bathing and/or during warm weather to ensure water clarity is maintained and sanitiser efficiency.
  3. Ensure bathing has ceased before adding chemicals to the water.
  4. Add OPC Chlorine Shock Granules directly to circulating water with water temperature above 200C (for temperatures below 200C add product to 10 litres of clean water in a clean plastic container and add to directly to the circulating pool water.)
  5. To increase Free Chlorine reading by 1 PPM (parts per million) add 75g per 50 M3 (11,000 gallons) of swimming pool water.
  6. A shock dose of Chlorine Shock should achieve a reading between 5 – 8 PPM
  7. During the shock dose process always ensure water is circulating via the filter and all pool covers are removed.
  8. After 24 hours re-check Free Chlorine Readings and pH levels.
  9. Swimming should not resume until Free Chlorine levels are below 5 PPM (but above 2 PPM) and pH levels are 7.3 – 7.5.

Use biocides safely. Always read the label and product information before use

Storage & Handling

  • Store in a cool, dry place.
  • Contact with combustible materials may cause fire.
  • Do not mix with other chemicals.
  • Always wear suitable gloves and eye protection when handling.
Additional Information
Model ONPFG062
Manufacturer OPC