Filter Media-Alkaline water 1)Using Alkaline Ion Balls, pH value 7.5~8.5. 2 ... color; Different sizes. 1)About Filter Media-Alkaline Water:Alkaline Ion Balls,providing weak alkaline water with pH value 7.5~8.5, ... There are grey, Bowrn red color. All kinds of Water Filter Media:activated carbon, Coal,Coconutshell, NSF certified;Mineral ... service.3)Pictures of Filter Media: Filter Media-Alkaline Water