Heat stress on cannabis plants
What it looks like
Leaves canoe upward at the edges, and the tops can look tired in the hottest part of the day. It tracks the room temperature, not a missing bottle.
What usually causes it
Drop the room temperature and get air moving over the canopy. Leaf VPD on the chart is the check. Canoed leaves in a 85°F room are heat, not a missing nutrient.
Check this first
Leaves canoeing up, edges dry, room or canopy hot to the hand. Read the leaf with an infrared gun. If the leaf is much hotter than the air, the light is the problem, not the feed.
This is identification for a home grow. It is not a pesticide label and not medical advice. Follow your local law.