Gentoo Filter Cartridge is essential for your Gentoo, Gentoo Plus, Gentoo Glass and Gentoo Lite Water Filtration System. Each filter cartridge is up for replacement every 3 months, or with 600L of water used, which ever is first. 6 STAGES OF HIGHLY EFFECTIVE FILTRATION 1. Fine Top Mesh – Pre-filtration particles. 2. Energising Ceramic – Infra-red stone (4-14 electromagnetic wave) capable of releasing a high level of energy into the water by vibrating, breaking up and realigning, making the molecules smaller, more orderly lined and easier to absorb. 3. Activated Carbon – Higher absorption to effectively filters chemicals, bacteria and organic pollutants, helps deodorise. 4. Kinetic Degradation Fluxion (KDF) – Removes pollutants eg. algae, fungus, chlorine and radioactive heavy metals, prevents bacteria growth 5. Calcium Ionised Clay & Ion exchange - Releases activated calcium ions and mild alkaline (pH 8.0 – 8.5) Alumina removes fluoride. 6. Bottom Mesh - Prevents particle release.