If the leaves closest to the light start to turn brown, you know that the plant has absorbed too much heat. The first logo looks like an elongated outline on the outside of the leaf, so if you can grab it quickly, you have a chance to avoid further damage. If some leaves start to curl, this may also be a sign that the plant is too close to the light. Good ventilation usually helps solve this problem.
Provide insufficient lighting
It is important to consider the scale of your operations. Consider how many plants you are growing and how many LED grow lights are needed to properly illuminate them. You should also understand the brightness of the lights you are using. For example, it is said that a 200W LED lamp is sufficient to produce about 100 grams of output. Make sure you have enough light, but still find a good balance between providing enough light and not over-illuminating.
Set the light at an inappropriate distance
Overheating or insufficient light may be caused by too much or insufficient light, or it may be caused by too close or too far away from the plants. There are no general rules for setting the distance, but it is recommended to place the LED at a distance of 12 to 18 inches from the plant.