20 inch filters can be custom made for particular situations. They can be made in singular applications or multiple applications. Some of the multi applications are as follows: Nitrate/multi, for the removal of nitrates in the water and the incorporation of our 6 stage multi media filter. Arsenic/multi, for the removal of arsenic in the water and the incorporation of our 6 stage multi media filter. Note: arsenic removal filter required to be disposed as hazardous waste. Many different applications can be custom manufactured including the following: Flouride, Flouride/multi, Phosphate, Phosphate/multi, Calcite/coconut, Phosphate/coconut.
