Although I use a PH of 5.8 generally speaking, I am not anal about it and PH drift is a good thing. I allow a range of PH readings from 5.5-6.0. That way you hit the optimum absorption rates for various elements at different times. But, yeah, 6.2 is too high, IMO, but it's also possible Hempy did his measurement with a PH pen that wasn't calibrated/off a bit, and his plants obviously responded well, so he didn't change it.
Hempy knows his shit, no doubt about it, however he speaks/writes in an odd manner, so he can easily be misunderstood.
I also water to a high amount of run off, replacing the rez on each watering. I use the big clay colored saucers from HD, and they hold quite a bit. I don't mind vacuuming up the overflow with a shop vac after each feeding. It's simple and takes only a couple of minutes, and the freshly oxygenated rez makes a huge difference in my experience. So I don't stop when I see the first drops come from the drain hole. I let her rip until I have a good amount of runoff.
Hempy knows his shit, no doubt about it, however he speaks/writes in an odd manner, so he can easily be misunderstood.
I also water to a high amount of run off, replacing the rez on each watering. I use the big clay colored saucers from HD, and they hold quite a bit. I don't mind vacuuming up the overflow with a shop vac after each feeding. It's simple and takes only a couple of minutes, and the freshly oxygenated rez makes a huge difference in my experience. So I don't stop when I see the first drops come from the drain hole. I let her rip until I have a good amount of runoff.