So what gets me is i see people say to water anywhere from 5-6.5, no real straight answer obviously...you get to know your plants etc. But i havn't grown hydro before, and i'm not understanding why the PH for DWC should be 5.3 ish , and for hempy thats way to low usually (if you've washed your perlite well enough to not have any change from carbonates.
But why the variation between passive and DWC, as DWC has a pretty specific PH am i right to say that?