Swimming Pool Filter Aids

Imerys is the largest producer of filter aids including diatomaceous earth (D.E.) and perlite with close to 100 years of manufacturing and application expertise in the filtration business. Imerys produces and markets DE filter aids for pools under its Aqua-Cel brand and perlite filter aids for pools under its AquaPerl brand.

Aqua-Cel (DE Pool Filter Aid):

Aqua-Cel is a high quality, diatomaceous earth (D.E., diatomite) filter media, specifically designed for use in swimming pools.

  • Imerys Aqua-Cel diatomaceous earth filter media is made up of diatoms, which are tiny, aquatic organisms. Their skeleton consists of silica, the second most abundant element in Earth’s crust after oxygen.

  • The remains of these diatoms form deposits of diatomaceous earth which are then mined, crushed, and dried to powder form, and subsequently calcined by heating in excess of 1,800 degrees Fahrenheit.

Advantages of Aqua-Cel

  • Improves Filter Operation

    • Pre-coats fast and effectively, improving filter efficiency.

  • Provides best clarity

    • Removes particles down to 3 microns.

  • Makes water safer

    • Filters out most potentially harmful bacteria.

Aqua-Cel can also be used in Sand filters to enhance clarity.

AquaPerl (DE Pool Filter Aid):

The new crystalline silica-free, alternative filter media for swimming pools.

Key Features:

  • Made from perlite, a naturally occurring mineral that contains no chemical additives.

  • Tested and Certified by NSF. The only perlite swim pool filter media with NSF certification.

  • Perlite particle sizes are carefully processed to optimize filtration performance.

  • Engineered for use in diatomaceous earth filters, and can replace both DE and cellulose in these filters.

  • Perlite is a natural mineral that is volcanic in origin. It is chemically inert and has a neutral pH.

  • Perlite is lightweight, non-toxic and environmentally safe.


  • Excellent filtration performance.
  • Excellent precoating qualities, even in subsequent cycles.
  • Excellent dirt holding capacity.
  • Superior cake release during backwash.
  • Lighter in weight than DE (1/2 the weight). If you used 5 scoops of DE in your filter before, use 5 scoops of AquaPerl now.
  • Chemically inert. Crystalline silica-free. Non-toxic and environmentally safe.
  • Greater filtration capacity which gives the pool a sparkling clarity. Backwashes faster and more thoroughly resulting in less time spent on filter cleaning and maintenance.


To find out how our products can help your products and processes please contact us

Matt Jordan

Product Spotlight


AquaPerl is the new crystalline silica-free, alternative filter media for swimming pools.
For more information, please Ask an Expert.