Keeping cannabis grow lights located at the optimal height is an important factor in both the vegetative and flowering stages of growth. Even though LED lighting (light emitting diode) produces a lot less heat than Metal Halide, HPS, LEC and CMH light systems, hanging at the correct distance is paramount.
How High Should Led Grow Lights Be Above Cannabis Plants?
How far you have LED lights away from the canopy depends on the wattage power output of your LED lights. However, 24-36 inches for seedlings, 12-24 inches during veg and 18-24 inches during flowering are safe height parameters. Check instruction manual specifications and contact the manufacturer for clarification.