Just checked my filters and noticed something wierd, my tap water goes into my pre-filters at 79ppm and comes out at 89ppm after running about 30 mins, it then goes into my RO at 89ppm comes out at 9ppm. lastly into my DI resin at 9ppm out at 0ppm.
Is it normal for the water to come out of the pre-filters higher than it went in? can i do away with my pre-filters?
TIA
Is it normal for the water to come out of the pre-filters higher than it went in? can i do away with my pre-filters?
TIA