I use a beneficial microbe brew from earthworm castings and so forth.
I stopped using it briefly out of laziness and shortly thereafter i noticed droopage at night...i put up with it...then i had one start doing it during the day a little bit and that stirred my energies enough to brew up...
But honestly...5.2 will not work.
You really wanna be 5.5-5.8.
A little high for a bit is ok, but much lower than 5.2 and your roots start to nub up and quit working...
Then the nutrient lockout kicks in and its pretty much game over.
AK-48 is phenomenal.
Freaky fast, rock hard lumps. Really impressive.
Its literally done at 48 days with a sativa high...
Penetrating aroma...the flavor wasnt as impressive but i think that was because of the brief leaching...only a week or so because i just didnt believe it would be ready...