i thought ro was 0ppm
My RO-DI water comes out at 0ppm.i thought ro was 0ppm
What kind of filter you have? How many stage? Do you have a Deonizer(DI) membrane as well? Most 5+ stages comes out at 0ppm. Maybe your sediment or carbon filters and/or RO membrane filter needs to be changed.Not mine its close but 25 is very good compared to taps 300 to 400