The feeding chart for General Organics by GH states that pH adjustment is not needed. I would assume it's the same for EJ but I suppose you could contact them to confirm. GH gave me great info when I called them to confirm. Lots of folks have trouble accepting this but it's working great for me.
BTW--I'm running the GO line in coco with no pH adjustments and my plants are doing great.
I say if it's not broke, don't spend money trying to fix it. With the EJ liquids, I just add a little less then recommended, bubble for a few hours, and pour them into my soil. I do this because, 9 out of 10 times, the pH of your mixed up solution will rise over an hour or two, from the very acidic zone, to the middle of the road zone. So, why waste money on a pH up product. Plus the microlife in the soil, will dial it back in, provided you're not dropping acid or alkaline bombs into the soil (or other medium).
However I do ph.
For the 2 moms I have.
I always get it to at least 6.5-6.8 (6.8 everytime you get use to it) and aerate while i mix em (maybe an hour or 2 after). I never have not.
Soil Ph is 6.8, I "un"-stressed them.
I had to move the 2 moms from a 3 gallon to 7 gallon and in less than a week, the roots started poking out!
Im no pro, just had a little experience with EJ. There's my opinion.
I also use Mikes and condition soil a little.
Find what Works for you. And what your most passionate, or enthusiastic, about.
Why fix something that is working really, really well?
I don't know about phing before or after you aerate?
This just works for me.
I started bubbling EJ and stopped checking ph.
Didnt want to fuss with bubbling but I must say its well worthwhile.
Its looking good. I'm a convert
EJ is meant to be bubbled.