most 9f the upper leaves, new growth curling/clawi...

some insect like spider mites for example cause that problem. nothing is visible in this photos so you just take a goood look under the leaves jut make sure that everything is fine. hope u do not have pests good luck

Hi @AmtrGanJaFarmer! I see you've just plugged your carbon filter, so my guess is that this had a dramatical impact on your environment stances (mostly the temperature) and your airflow is now less efficient. With a 80°F / 27°C day temperature, you're already in the red zone, resin production will slow down as well as terpenes potency. Do you have a min/max functionality on your thermometer? What was the MAX temp for the last days? Also, how old is your carbon filter? Is it working continuously, with the help of a thermostat? On the other hand, I also see some dark foliage and the plant has stretched like crazy within the last 2 weeks, that makes me think of a slight Nitrogen abuse. Nitrogen is essential during the stretch but you should control its levels carefully, too much N and your plant will only grow in heights, not enough N and a deficiency will quickly appear and spread. In this situation I would try to slow down on nutrients for a few days and find every possible way to improve the airflow: add tiny fans blowing a continuous cool breeze onto the canopy, consider a carbon filter replacement and/or a new air extractor that you can plug to a thermostat. Hope this will help, keep us up-to-date and happy growing 👊

The clawing leaves are signs of nitrogen toxicity , you don't seems to have heat issue , neither bud rot but to really know you should tell us about your watering routine ( how often, how much ) , your fan don't seems to blow on the upper part of the plant only so I would say N abundance ✌️🏼

It is hard to tell with the purple lighting but maybe nitrogen toxicity? The leaves look very very dark green, but that could just be the lighting. The claw is also pretty indicative of N toxicity. Could be heat stress as well but usually heat stress causes tacoing and upwards curling/angling of the leaves not clawing. If you could snap some pics under normal white lighting that would be super helpful.