This just started…

few things that might be doing this. growdiaries.com/diaries/194793-atlas-seed-kombucha-cream-grow-journal-by-lonestranger I notice this happen when my roots don't get enough oxygen but your in a DWC style setup so check them roots. are they slimy or smelly or off colour? Maybe something is in the res and needs killing. peroxide can help with that or other hydro clean products. Your lighting is 24/0 and I am not a huge fan of this. All plants need downtime, so the excess of light is extra stress and not needed. Look into something called DLI, cannabis plants can handle aorund 35-40 from seed to harvest. anything over this require extra care and CO2, anything below this is limiting potential its the sweet spot. Your PH is kinda low as well at 5.6, I'd aim for 5.8 min or even 6.0 will give your more wiggle room if it drifts. All nutrients are available at a wide range when growing in soilless. EC looks on point from what I can tell. Good Luck!

Estou com Organoman e Roberts, toxicidade de nitrogénio. Alto stress provocado por luz, folhas tosse para cima. No seu caso esta trocado para baixo, excesso de nitrogénio, de a ela uma boa rega só água com ph controlado, e próxima rega com 0 de nitrogénio, se for possível, caso não consiga dar 0 de nitrogénio, faça próxima 3 regas só com água, depois retomar rotina de alimentação lentamente.

SEVERE nitrogen toxicity.

The feed looks way too strong. Or you are not getting enough run off. Looks like nitrogen toxicity.