Dendrobatez Posted December 14, 2014 Report Share Posted December 14, 2014 So I have an R/O filter and it does pretty well - from 340tds down to about10-15 which is 96-98% removal. It doesn't however affect my ph too much, takes it from 8 to about 7.7. My question; is adding a D.I. stage to the filter going to cause the water to come out at an even 7? Quote Link to comment Share on other sites More sharing options...
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