The best LED grow lights for weed produce precisely the correct light spectrum for your marijuana plants, and do not waste energy radiating light in an unneeded spectrum.
We recommend LED grow lights that have a wide range of wavelength options available. You can adjust the best LED grow lights to provide only the needed light spectrum.
Here are the most important factors to evaluate when choosing the best LED grow lights for your setup:
There are no real standards measuring LED output in wattage. The number of watts a LED grow light actually draws from the wall is not the same as the advertised wattage. This is misleading.
A LED grow light advertised as 300 watt means that the light can be used it as an alternative for other types of 300 watt grow lights. The real wattage of the light could be as low as 140 watt because LED grow lights use far less electricity. When determining the wattage needed for your grow room, it is easiest to work with the advertised wattage.
The optimal wattage range is between 50 and 80 watt per sq ft. For example, a 3 x 3 ft grow tent (9 sq ft of grow space) requires at least 450 watt of LED lighting (9 x 50 watt). You can accomplish this either by purchasing a single 450 watt (or more) LED grow light or by daisy chaining a number of smaller LED grow lights together.