Keeping LEDs Too Close Can Give Your Plants “Sunburn” That Looks Like a Nutrient Deficiency!
Sunlight” distance on the chart and only move lights closer if your plants are stretching towards the light (getting tall and lanky).
With fluorescent grow lights, it becomes especially important to learn how to use plant training techniques. You will need to train your plants in order to achieve an even canopy and get good harvests. But with good training, you can grow cannabis under CFL grow lights that look like this!
Fluorescent Grow Lights (like CFLs & T5s)
Powerful LED grow lights need to be kept relatively far away from your plants to prevent light burn
If you’re using new bulbs, never start closer than the “
LEC/CMH Grow Lights
Sun System LEC Grow Lights
When it comes to distance, LEC grow lights produce an extremely powerful light and typically need to be kept further away from your plants than HPS grow lights of a similar wattage. The proper distance varies wildly between models.
Fluorescent grow lights come in many different shapes and sizes, from twisty bulbs to long tubes. Fluorescents are popular because they make efficient and pleasant lighting for humans, and also work great for herb gardens and other types of low-key indoor gardening without using a lot of electricity.
Note 2: Incandescent light bulbs (old fashioned light bulbs) are NOT suitable for growing marijuana!
Metal Halide grow lights are generally used for the vegetative stage because they produce a bluish light that vegetative plants love, though this type of light can also be used all the way to harvest.