Removes chlorine, calcium, and magnesium ions in the water , thereby reducing the hardness of the water, creating softer water. This filter can also remove harmful water fluoride.
 
Filter media includes:
Ion Exchange Resis
Activated Alumina
Calcium Sulfite
 
Filter lasts for 6 months with normal usage
AOK Filter E
 
**It is recomended if you are adding this as a new pre-filter that you also buy the 2pcs quick connect accessories**