Crystal Quest Eagle Anti-Scale Systems/Saltless Water Conditioner is a new technology which transforms the calcium and magnesium carbonate (hardness) of the water into mechanically stable and heat resistant calcite crystals (nanometer size) which no longer cause lime deposits. The calcium and magnesium crystals are simply rinsed away. Unit is exceptionally useful when limescale deposits are high and collect inside water lines, or interfere with household appliances or machinery. TDS (Total Dissolved Solids) will still measure calcium in water, but it will no longer stick to surfaces. Eagle 1000AS has a 4 stage Filtration System: * In First stage, Water flows through a 20" sediment filter cartridge that removes sediment, silt, sand and dirt. Also extends the life of the filter media and prevent damage. * In stage 2, water flows through an Eagle Anti-Scale media tank. * In stage 3, water flows through a 20" solid carbon cartridge for removing volatile organic carbon compounds (VOC's, insecticides, pesticides and industrial solvents.* * In stage 4, water passes through a .01 micron Ultrafiltration (UF) membrane. Ultrafiltration (UF) is an important purification technology used for the production of high-purity water. UF is effective for the removal of colloids, proteins, bacteria, viruses, parasites, protozoa and pyrogens (e.g., gram-negative bacterial endotoxins), other organic molecules larger than .01 micron, and most other water contaminants known today. Eagle 1000 Anti-Scale Water Conditioner Wastes no water, uses no electricity . Easy Filter Changes 8 GPM service flow Available in 3/4" and 1" NPT input/output Replace anti-scale media approximately every 3 years.