yep - not only does it need to be balanced, N is actually required more than PK in the first weeks of flowering, so they say. to keep them from yellowing out straight away (and even keep em green all the way thorugh)
to eliminate yellowing in flowering (which isn't all that bad esp as you approach harvest), you need to feed the same amount of nutrients (=ppm, yes), but with more N in them - change the ratio, not the amount.
yeah but not just like, give it more N as it is. To provide more N, flush your soil well, then use the same amount (ppms) of nutrients, only with *proportionally* more N.
two liters a day for seedlings? that's crazy
You must have misread. what you are giving also sounds like way too much. These plants don't look good, the first three pics. Though it looks like genetics fuck up more than anything.
1. why are you trying to make sure there's ph lockout?
you want to use water 6.5 to make sure there's NO pH lockout.
2. have you been using pk addtives? I've seen this happen with them.