I like to keep mine around 5.5. If it drops to below 5 or rises over 6, growth slows enough that you can actually tell.
Flo is right again! If I didn't have to work today flo I coulda been replying faster LOL
Yes, I agree to add food. I don't think you really need a flush between vegg and flower, because vegging is the plant
setting itself up for flower. It will want all those nutrients stored in every leaf on the plant.
My advice is to try to keep the plant green and healthy throughout the whole grow, except last 2-3 weeks of flower.
If the plant is using nutrients from its leaves, it means it's not getting it from the res.
If you feed it what it wants and needs, then the last few weeks when your flushing it will have nice healthy leaves to eat from.
So much to say, so little time. No wonder there are so many books on marijuana lmao!