Abstract: This invention provides an improved apparatus for the treatment of water to reduce the formation of scale in those mechanical devices that employ water and to enhance the service ability of liquids in other applications through the use of magnetic circuitry which maximizes the effectiveness of the magnetic flux upon fluids. The circuitry includes flat-ring true permanent magnets, collector disks with tapered transmission points, set air gaps and threaded concentrator cores. This invention makes it possible to tailor magnet spacing to meet a wide range of velocity and flow rate requirements through the use of flux separators of varying sizes and the interchangeability of the inner core.