What is AFM? Result of 35 years of research and development, AFM (enabled filtering) is a substitute for sand, which can be installed in any type of sand filter without modifications. Unique activation process that makes it autoesronizing and provides higher mechanical and electroestatic filtration performance. Powerful Characteristics to its large hydrophobic area and mesoporous structure, AFMng can filter much thinner particles (1 micron) and 50% more organic substances than sand.Self-esterilizing surfaceResistant to bacteria growth.Expanded contact surfaceMesoporous structure, for Superior filtration performance.Surface with activated loadFor the adsorption of the thinner particles and organic matterUnique benefits that activation is so important? Because it significantly reduces chlorine consumption and ensures transparent and crystal clear water and the best air quality.The healthier water: prevents the transmission of pathogens (eg Crystosporidium)The most transparent water: offers a stable filtration rate of 1 micron.The healthier air: Avoids the formation of toxic by -products and the smell of chlorine.Lowest Operating Costs: Saves in washing water and chemicals.The most sustainable filtering: more lasting than all other filter means.Since calculating the AFM load required for a filter, it should be taken into account that it requires 15% less than the amount indicated for silica sand.1 AFM bag 21 kg = 1 sandbag 25 kg (even volume ) AFM GRADO 1: 0.4 - 0.8 mm 21 kgafm Bag 2: 0.7- 2.0 mm 21 kgafm Bag 3: 2.0 - 4.0 mm 21 kg bagCapacity filters, always place the filter load up to 2/3 of the total height of the filter.350mm filter sizeSand / Fine Glass 50kgSand / Glass Glass480mm Filter SizeSand / Fine Glass 50kgSand / Glass Glass 25kg500mm filter sizeSand / Fine Glass 75kgSand / Glass Glass 25kg600mm filter sizeSand / Fine