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Filter Media – Glass – AFM

Dryden Aqua – Activated Filter Media (AFM) 21kg

Developed by marine biologists, AFM is a direct replacement for sand and crushed glass. Tested and proven to double the performance of sand filters and outperform all other media on the market. A highly engineered, premium product manufactured from a specific glass, processed to obtain the ideal particle size and shape. Guaranteed for the life of the filter.

Available in:
  • Grade 1 - Fine 0.4-1.1mm - $89.00 inc GST
  • Grade 2 – Medium 1-2mm - $89.00 inc GST
  • Grade 3 – Course 2-4mm (Commercial Pools) - $89.00 inc GST

Frequently Bought Together

Total Price: $124.00

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Product Description

  • AFM®ng: Filters 95% of all particles down to 1 micron.
  • AFM® : Filters 95% of all particles down to 4 microns.
  • Sand: Filters 95% of all particles down to 20 microns.
  • Glassand: Filters 95% of all particles >25 microns.

AFM is exposed to a 3-step activation process to increase its surface area by up to 300 times for superior absorption and filtration. AFM is self-sterilising, filters particles as small as 4 micron, resists bio-fouling, bio-coagulation and wormhole channelling of unfiltered water and filters 30% more organic contaminants than quartz and sand. Available in 3 grades for optimal filtration. Requires 2/3 of usual sand requirement. Please contact us to discuss quantity required for your filter and a freight quote.

  • more than doubles the performance of an existing filtration system without the need for additional investments
  • is not subject to biodynamic instability and will never allow untreated water to pass the filter
  • substantially lowers chlorine oxidation demand by up to 50%
  • lowers backwash water demand by an average of 50%
  • is expected to last for the life of the filtration system
  • provides quick return on investment

For more information, visit https://www.drydenaqua.com/our-solutions/water-treatment/products/afm



Additional Information

Weight 22 kg

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We ship freight free for North Island orders over $169.00, and Waiheke Island and South Island orders over $269.00 (Applies only to orders under 25kg Auckland, elsewhere under 15kg.  Where applicable, RD and DG goods surcharges still apply).  Please click here for more details.


We stock quality pool and spa products and are confident that you will be very pleased with your purchase. If for any reason you are not satisfied please return it to us for a refund or exchange within 7 days of the purchase date. The refund will cover the purchase price of the returned product, including return shipping.  Please click here for more details.