How Far Should LED Grow Light Be From Plants? This is a trouble that numerous farmers, particularly marijuana growers, have. Some farmers hang the light very high, 30-40 inches from the top of the plant, as well as the plants, are really weak. Because the led grow lights is as well far away from the plant, the light is substantially lost in the procedure of dispersing, and the light that in fact gets to the surface area of the plant is very little absorbed by the plant, causing the plant not having the ability to soak up adequate light to expand. In order to allow plants to soak up more light to grow, some cultivators hang the led expand lights very close to the plants, therefore, the plants on top are stressed out. Hanging the light expensive will throw away light, as well as hanging as well close will melt the plants, so just how do we make a decision on the height of the led grow light? Past that, right here are a couple of insights and tips that can help you make the best options for your plants.