I read that that too hence why I kinda wanted to do a cleanse flush and to make sure there was no build up on the roots preventing access to those nutes. I also read that sometimes higher pH will lock out some
I was pretty much at my weekly res change so I just redid everything, went a little higher on a and b and put my pH at 5.8. this is my first hydro test. Always been in soil.
I'm a couple weeks into flowering and I've been getting a little bit of yellowing with brown spots.
Using hydro a and b also with head masta and mighty growth enhancer all by cx. I try to keep my pH in low 6 but it rises up alot. My ppms are at 1100.. temps are 70 to 75