leaf

Looks like they are curling upward to purposely reduce the amount of photosynthesis via closing the leaves satellites (Chlorophyll receptors). Keep that night temp at 70 or above, roots cannot uptake magnesium under 64 which is detrimental to plant growth during flowering, chlorophyll degrades below 67 and unless you are looking to bring out purples It's just making the the room uncomfortably chill for optimal growth. 72 daytime is too cold for nature's liking, with the LED lights being so far from the canopy there will be 0 heat on that canopy, the leaves will be sitting at 70-72. for maximal photosynthesis to occur leaf surface temperature must reach 86. I thinkkkkkkkkkkkk you are hammering the plants with so many photons of light but growth is greatly hampered by other environmental conditions. This is causing your leaves to close the satellites as it can no longer deal with photosynthesis. The 9 Cardinal Rules of cannabis cultivation must all run in perfect harmony if one is reduced all others will be reduced to the lowest of the 9, almost like bottlenecks in production lines. Im so used to running ambient 77 and adjusting height to reach 85 on canopy, trichomes degrade above 86 so be careful during flower too. Good luck brother.

That means they're healthy and happy good job

thats a good sign that means your plants are happy and healthy hope that helps

The leaves are standing up because they are reaching for the light and are pretty happy. I always look at this as a good sign. The ones that are straight up might be excessive. I have had nice yields when I have plants do this. It allows better airflow to the buds as well. So it is a good thing really when I have it. When plants start flowering heavy and it no longer is making leaves get it closer to light to maximize bud development then. So right before they start bulking increase intensity. Would be what I would do. Good luck and happy growing 🌱 nice garden as well. My mamba Negra, cbd 1:1 green crack, and gorilla girl all did this if you wish to look at examples. Good luck and happy growing 🌱

Hello, it's hard to tell without knowing the grow conditions. How do you water and the quantity ? Even do yu the pH of your water ? The lights seems far from the plants. Peace