Spots on leaves early and mid flowering Stages

To dont rewrite everything i will jest post link to journal. And last post is my problem. You can answer Here or there. Thank you so much in advance

You really need to add more info. what ferts and how often? how much do you water and how often, or is this a hydro grow? what is the highest room temp? The last question is important as what you have kind of looks like heat damage.

@polishpollack All info is journal but its not a problem to post it here

Ferts are high NPK 6-6-31 of I remember and 9-51-6. I water when pot is light so every 3days approx and 1 - 1,5l per pot depend on runoff, I used fertilizer twice on the oldest one with that bleaching leaves and once on the other 3 ladies. I dosing it really low because of strength of it and there are no sign of nutes toxicity on tips. The spots are only on one of younger plants and the bleaching is on the oldest, and it’s coming from bottom to top I think, but right now highest bleaching leaf is on mid level. It’s looks like a phosphorus def but I’m not so sure as I am beginner. I can provide more photos in 10hours or so.Highest room temp is 84 and lowest is 70.
Exhaust is 300m/3 and 1 mixing fan and 1 fan is cooling HPS. HPS power is 400W

Okay thank you and sorry for the confusion. Your 31 seems too high and the 51 too. I take it you're mixing these two? I think you're fert levels are out of whack even if the ppm is low. do you know the ppm or ec you're using? 84 is pretty high too for an indoor grow.

I’m not going to lie I don’t understand what you mean with “too high”. I can’t check ppm unfortunately and ec. 84 is maximum when there is 86 outside. Usually it’s ~~78

A little study is in order. Most fertilizers don't have such high percentages like you're using. Leads to overdose.
NPK Ratio: Chemical symbols are N for nitrogen, P for phosphorus, and K for potassium.
This term refers to the ratio of nitrogen (N), phosphorus (P), and potassium (K) in fertilizers. It is always expressed as N-P-K. For example, a fertilizer labeled as 24-6-6 has 24% nitrogen, 6% phosphorus, and 6% potassium.