Filox can be used for iron and manganese reduction by oxidation. Like Birm the pH needs to be controlled and there needs to be oxygen present -see data sheet for more details. In theory it can tolerate chlorine and has a higher through put than Birm and manganese dioxide.This Filox unit is supplied partailly assembled for shipping. Some assembly will be required. All components and instructions will be supplied.The Filox unit size is the physical size of the vessel given in inches (eg 10" x 44").The figure in cubic feet (cu.ft) is the volume of the Filox. The lph (litres per hour) figure is the maximum flow rate.