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Decalcit Filter

Highly effective granules for a fast decalcification of all filter types. Improve the filtration performance and increase the efficacy of the water treatment products.
  • Decalcit-Filtre
  • Decalcit-Filtre
  • Decalcit-Filtre
  • Decalcit-Filtre
  • Decalcit-Filtre
  • Decalcit-Filtre
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  • For all types of filter

  • Directly into the filter

  • If necessary

  • 1 kg Decalcit Filter in 10 L of water

Use this product only in accordance with the instructions on the packaging. Deep descaling: once or twice a year.

Sand filter:

  • With filtration stopped, close all the valves in the pipes (skimmer, bottom drain, sewer, discharge, etc.) and open the tank lid.
  • Spread a 10% solution (100g/1L of water) of Decalcit Filter on the sand.
  • Leave for at least 12 hours with the filter off and open (to allow degassing).
  • Close the filter, open all the valves, then backwash and rinse the filter.

Cartridge (or diatomaceous) filter:

  • Immerse the cartridge (or the candles of the diatomaceous filter) overnight in a 10% solution of Decalcit Filter (1 kg / 10 L of water) then rinse thoroughly.

Warning: Never mix different chemicals in concentrated form. Avoid spreading Decalcit Filter in the pool: Decalcit Filter creates chloramines when it comes into contact with chlorine. Always add the product to the water and never the other way round. 

Product benefits

  • Quick action

    Phosphate-free

  • Effective removal of limescale

  • Easier cleaning and improved filter performance.

Decalcit Filter is made up of highly concentrated granules that quickly descale and clean all types of filter (sand filter, glass, cartridge, etc.). Regular use of Decalcit Filter visibly optimises filter performance, leaving your water crystal clear..

When used regularly in the sand filter, Decalcit Filter prevents scaling and therefore agglomeration of the filter material. It prevents the formation of preferential passages.

Its action maintains or optimises filter performance and improves the effectiveness of water treatment products. Impurities are retained more effectively by the filter, so disinfectant consumption is optimised. Decalcit Filtre can be used diluted to descale cartridge filters.

Available in 1 kg bottles. 

Dangerous. - Observe precautions for use.

FAQ: How to clean a cartridge, sand or glass filter

  • If you have a sand or glass filter, descale it thoroughly with Decalcit Filter to remove limescale deposits. With the filtration system switched off, close all the pipework valves (skimmer, main drain, waste and return) and open the filter tank lid. Pour a 10% solution of Decalcit Filter, i.e. 100 g per 1 L of water, directly onto the sand. Leave to work for at least 12 hours, with the filtration system switched off and the filter open to allow any gases to escape. Close the filter, open all the valves, then backwash and rinse the filter.

    If you have a cartridge filter, rinse the cartridge thoroughly with clean water using a suitable brush. Then descale the cartridge. For a thorough clean, soak the cartridge (or the elements of a diatomaceous earth filter) overnight in a 10% solution of Decalcit Filter (1 kg per 10 L of water), then rinse thoroughly.

  • To clean and descale a sand or glass pool filter, use a product specifically designed to remove limescale deposits, such as Decalcit Filter. Its acidic granules provide a thorough clean of the filter and help maintain effective filtration. Decalcit Filter is phosphate-free.

    Precautions for use: Never mix different chemicals in their concentrated form. Avoid adding Decalcit Filter directly to the pool: when it comes into contact with chlorine, it can cause chloramines to form. Always add the product to the water, never the other way round.

  • To descale your pool sand filter thoroughly, pour a 10% solution of Decalcit Filter (100 g per 1 L of water) directly onto the sand. Leave it to work for at least 12 hours, with the filtration system switched off and the filter open to allow any gases to escape. Close the filter, open all the valves, then backwash and rinse the filter.

    During the pool season, check the filter pressure gauge regularly, as this will indicate when the filter needs to be cleaned. When the pressure rises by 0.2 to 0.3 bar above the reference pressure after cleaning (the reference value should be the pressure when the filter is clean), it is time to backwash the filter.

    Depending on how dirty the filter is and the pressure, which depends on the power of the pump, backwashing can take between 2 and 3 minutes. After backwashing, remember to rinse the filter for approximately 30 seconds. The amount of fresh water that then needs to be added depends on the amount of water discharged to waste during backwashing.

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