Softening Filter In-Line FilterPacks Power source: 2 x AA

Power source: 2 x AA batteries (included)

The color changes from purple to amber as the resin exhausts

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as the indicator dye changes color

Softening Filter In-Line FilterPacks Power source: 2 x AAInline Water Softening Filter Introducing Air, Water & Ices in line water softening filter! If you dont already have a water softener in your house, and youre looking to invest in a water softener, then this is the filter for you. Consider adding this softening filter as a pre filter in front of your RO unit. Not quite the right filter for your system? Please check out all our filters here. How the Inline Water Softening Filter Works: The filter works