Developed from over 35 years of R&D, MICRON 1 is crafted from pure, selected recycled glass and activated through a proprietary 3-step process. This results in a self-sterilizing media that delivers certified 1 micron filtration far surpassing sand and other media alternatives. MICRON 1 prevents bacterial growth and channeling, while reducing chemical use, water use and energy use through more efficient backwashing. Compatible with all sand filters and built to outlast any other media.