There are many types of lights, but below are the four most common you’ll find in a grow room. There are many variations within each of these four types as well, and new lights and technology come out all the time.
When growing outdoors you can harness the power of the sun, but in an indoor environment, sunlight is mimicked through the use of grow light bulbs, which aim to display the same spectrum of light as the sun.
You can find HID reflector hoods, as well as MH and HPS bulbs at any local grow shop.
LEDs also typically run a lot cooler than HIDs, so you may not need extra equipment to cool down your grow space, and one LED can usually be used for both vegetative and flowering growth. Some high-end LEDs allow you to change the spectrum for each growth stage.
Factors to consider before buying a grow light
Some grow lights are more expensive than others, but also more efficient, saving money in the long run. Some lights are bulky with many parts, some light in weight, and some are better suited for young or mature plants.
How Far to Keep from Plants: 12-18″ away from tops of plants
A relatively new name on the scene, Advanced Platinum is selling professional LED grow lights for less money than many other LED lamps of the same quality. Despite the cheaper price tag, they have a wider light spectrum than most LEDs, which helps plants grow faster with fewer of the leaf problems and deficiencies than you see with LED models that only have red and blue diodes. They’re making a good name for themselves in the cannabis growing community because their LED models are getting really great results when it comes to both quality and yields.
Grow Space: 2.5×2.5’ coverage at 34” (suitable for vegetative stage) and 2×2’ coverage at 26” (suitable for flowering stage)
Which LED grow light brands can be trusted?
Trusted LED Grow Light Companies for Growing Cannabis – These LED models have been tested and shown to work well for growing actual live marijuana plants
Average Yields: 10-20+ ounces – keep in mind that the strain (genetics) and any plant training you do makes a huge difference in your final yields
ViparSpectra LED Grow Lights
View video of this Eldorado plant by Endive
(check out Endive’s website)
The name “Quantum Board LED grow light” originated from Horticulture Lighting Group, though the term is now sometimes used for any LED in this style. They tend to have relatively low wattage diodes which are spread out over a large area on a board. These are becoming more popular lately, and seem to offer particularly good results for the amount of wattage used.