Yellow and burned top leaves

Hay un bloqueo de nitrogeno no deja que tu planta se alimente de P K. Estas cerca de la cosecha. Yo haria un lavado de raices por 7 dias y cosecharia suerte

At that point I'd say it's normal yellowing... Senescence is happening ! Start flushing her, or you can think about it really soon !

To many cooks in the kitchen pal. And they all throwing their N thru your grow. You really don't need 4-5ml/l of what you're using. She's coming to her end of life. Id start a slow flush and let her finish eating what's left in her pot for the next week -10 days. Good Growing

I keep want to come back to nitrogen deficiency, curled up burn tips and yellow tips did you cut the nitrogen right out of the feeding schedual for just PK nutrients if so that's part of your problem, Nitrogen is need through out the life cycle of the plant even in flower and should be added back to the schedual or increased a touch to counter react the issue, also I'm seeing a Sulphur deficiency as well, make sure your PH is good in the soil and if so add some Epson salt to for a few waterings 1 tsp per 3.6L and I think you'll be fine also your DLI is off because you're running 20 hour light schedual which i would switch to 18/6 which will help with nutirents up take, also your VPD is off a bit lower your temp by 1C and or raise your RH by 2% and you should be on your way to mending...People don't realize that PPFD, DLI and VPD is the foundation of nutrient uptake along with PH, they're just as important and should all be monitored, I have a inkbird thermostat and humidity monitor and I also have a humidifier and dehumidifier plus a heater and cooling fan as well to keep those number as close as possible your running at 1.19 which is just over the stress line and should be between 0.96 and 1.15 and you would see a major difference in water uptake and nutrient uptake as well...Best of luck