My problem persists, please help me?

Hey, I would love to give you some guidence in this situation. I wouldn’t give up yet because the plant is still in the beginning of flower (I believe). First of all you need to defoliate the plant asap because you have dead leaves amongst the healthy obes and the moisture gets stuck between them , wich causes deseases. If you don’t have any air movement going it would be great! Secondly, i don’t even have to calculate how much mg/L NPK you put in, I already know it‘s to much. There is no need to stress the plant with such excess of nutriens when you could give them a healthy amount instead. I‘m a little lazy rn to google every npk of all the fertelizers you put in but if you pm me the npk ratios and the weight I can calculate a more than adequate solution for you. But first you have to Flush the plant a few times to get rid of all the salts in the soil. Again, it‘s not to late to fix it 🙏 But you have to change something in your nutriensolution and clean up the dead and rotten stuff of your canopy. You already came this far so i‘m sure you can finish. After you flushed and defoliated you feed the plant the right amount of nutriens! Not to much. If you need help calculating that you can send me the informations. Best of Luck!

I would just use straight water flush with 1m per lt of hidrogenproxide for a week

Overfeeding, toxicity, now lockout in next grows would feed less, now way too late to correct something in my mind. Just feed less.

insufficient info.. pics too far away.. can't help in any useful way. The canopy is so damaged that we can be confident your balance of nutes has been off for a long time, though. A lot of marijuana branded fertilizer systems suggest absolutely retarded ratios of nutrients that lead to such a canopy. If in soil, that adds a whole heap of unkowns to the equation too. tip: avoid gimmicks like "space buckets." All it does is make for a cramped space with a lot of negatives and no positives that matter much. "looks cool" / "seems cool" is a poor way to choose how to do things, in general. These are plants. They are ordinary plants that behave like most other similar plants. If you don't see nurseries or professional greenhouses doing it, probably not smart to do it.

Oh yeah, my initial answer error'd out so i lost it and had to re-write it from memory. I saw the powdery mildew comment and i remembered what i said before. It wasn't about powdery mildew. To me, it more looks like calcium dust from using hard water in a humidifier. Powdery Mildew looks different than that as i recall. I've not had PM in like 25 years.

I couldn't find the diary associated with these pix. I was trying to see what your medium you are growing them in is. If it's soil i would suggest start watering without nutrients for a bit. Just pH to 6.2 your water and water when it needs to be watered. aka, when your pot feels light. LIGHT!!! From where i'm sitting that plant is suffering from toxic soil, oxygen deprived roots, and out of range pH. You need to water with 6.2 pH water only for awhile. And do your best to get your temperature and humidity in the best possible range you can. 72F and 50% humidity.

You got powdery mildew going on likely because the plants are unhealthy, PH fluctuations are evident with the rust color section in between the leave segments, calcium and magnesium deficiency...Theres is a lot going on, likely would be better off starting over, cleaning the area with soap and water then bleach and water and then peroxide to kill the mildew...This are beyond unhealthy

Wow where to start lol. it looks to me you are growing in a space bucket ? in suck small spaces you will do well to get a healthy plant you need ait in and out you need good ph stable nutrients you are far from off here buddy i dont mean to sound depressive but just trying to help bigger space better extraction and intake better light its all in play lol

I'm not familiar with your nutes as I haven't used them for some time. But your plant is showing Nitrogen toxicity. You probably need to lower the amount of N your feeding.