Bro, this is a WEED your growing I use 'pure undiluted' lol TAP water on my girls, they soak it up like these Orange County bimbo's at the chlorinated pool next door. I add GH
floranova and floralnectar with some HB-101 someone gifted me. They LUVIT.I tested
the PH a few times but I'm in SoCALi the water is so buffered before you get it the ph
never seemed to hurt my girls, I haven't needed to test ph its always the same, maybe I have high-chlorine resistant weed, not. Good luck!