The most common issue that individuals have with these types of machines would be the filters having clogged. Having said that, common servicing, correct cleaning, and adherence to manufacturer tips will… To assist you to with buying the proper ionizer, Here's an index of best water ionizers out there available https://allhealthmarket.com/product/home-care-2/oxygen-and-hydrogen-generator/hydrogen-inhalation-machine-300ml-450ml-inhalation-machine-molecular-oxygen-hydrogen-generator-h2-inhaler-water-ionizer-spe-pem/