Before the fire I used General Hydroponics.
But that was for convenience.
My local Hydro store had it consistently at a decent price.
Then I moved.
This summer in the greenhouse I didn't check.
I never bought a meter after the fire.
I ran coco and soil without ph'ing.
I either got lucky with the ph.
Or my theory is that my bokashi and frass with Dynomyco created a great system to feed my roots regardless of ph.
Because I've never run coco without being dead on 5.8 ph before.
But I've had good luck with GH.
What do you have available?
#VIVOSUN #Love What You Grow
Bill284