Activated Filter Media (AFM) is a direct replacement for sand, doubling the performance of sand filters without the need of additional investments in infrastructure. AFM is a highly engineered product manufactured from a specific glass type, processed to obtain the optimum particle size and shape. It is then exposed to a 3-step activation process to increase its surface area by up to 300 times for superior mechanical and electro-static filtration performance! The benefits of using AFM: More than doubles the performance of an existing filtration system without the need for additional investments 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% Expected to last for the life of the filtration system Provides quick return on investment Size: 11.3 kg