Hi! I'm Charlie. In case you are questioning why I started WaterSystemsGuide, it's because I Beforehand worked to be a water systems professional/consultant for a large federal government initiative in California, USA. In this action, connect the metal tube (which may have come in your device’s package) on the ionizer. https://keurigfilter09876.kylieblog.com/21795032/the-5-second-trick-for-faucet-for-water-filter