WHAT IS AFM?
The result of 35 years of Research and Development, AFM® (activated filter media) is a sand replacement that can be installed in any type of sand filter without making modifications.
Made from green and brown glass, AFM® has undergone a unique activation process that makes it self-sterilising and provides enhanced mechanical and electrostatic filtration performance.
Powerful characteristics
Thanks to its large hydrophobic area and mesoporous structure, AFM®ng can filter much finer particles (1 micron) and 50% more organic substances than sand.
Unique benefits
Why is activation so important?
Because it significantly reduces chlorine consumption and ensures crystal clear water and the best air quality.
How to calculate
To calculate the required AFM® charge for a filter, you should take into account that it requires 15% less than the indicated amount of silica sand.
1 AFM® bag 21 kg = 1 bag of sand 25 kg (same volume)
AFM® grading 1: 0.4 - 0.8 mm 21 kg bag
AFM® grade 2: 0.7 - 2.0 mm 21 kg bag
AFM® grade 3: 2.0 - 4.0 mm 21 kg bag
Filter capacity table, always place the filter cartridge up to 2/3 of the total height of the filter.
Filter size |
Sand / Thin glass |
Sand / Coarse Glass |
350mm | 50kg | |
480mm | 50Kg | 25kg |
500mm | 75kg | 25kg |
600mm | 100Kg | 25Kg |
650mm | 100kg | 50kg |
750mm | 200Kg | 50kg |
800mm | 300kg | 50Kg |
950mm | 400kg | 50Kg |