Optional 225UP 5th stage Inline Alkaline upgrade(includes media)

* 225UP, System upgrade kit, 5th stage (or 6th stage in some systems) Inline Alkaline filter with clear housing, two UU clips and two elbow fittings

* Alkaline filter for the RO6-ALK 6-stage RO/ Alkaline water system

* Add this filter to your existing RO system to make the output water more alkaline (higher pH)

* Adding Calcium and Magnesium minerals back to the water after RO process, so the pH level ranges between 8.5 to 9.5

* Recommended to replace once a year

* Dimension: 2" x 10"