When users buy plant lights, they need to understand the basic requirements of LED plant growth lights:
Spectrum: LED grow lights simulate natural light, but unless they are full spectrum LED grow lights, such grow lights don't always have all the colors on the visible spectrum. If users grow cannabis plants from seed to bloom, they should be looking for a combination of blue, violet, red, and infrared (IR) LEDs (not too much far-red and UV), although there are studies showing that blue and red light is sufficient.
Heat output: To avoid burns on the hemp leaves, a good LED grow light has a cooling system, such as a radiator or fan, which can also help the light fixture avoid overheating.
Coverage: Coverage refers to how much of the plant's growth space is covered by light at different heights. It is usually measured in feet overseas and usually falls between 2'2' and 4'4'.
Power: LEDs are designed to have a positive correlation with price, so higher wattages will put more pressure on the wallet. The real measure of power should come down to how much light the plant absorbs, somewhere on the 400-780nm PAR scale. PAR stands for Photosynthetically Active Radiation, in other words, it is the amount of visible light that plants use for photosynthesis.
Light Intensity: The standard for measuring light intensity is micromoles per joule. In the product specification of LED grow lights, you will see it written as umol/j or PPF (Photosynthetic Photon Flux), good LED grow lights have high PPF because they produce more photons per second, look for Lights of 1.7 umol/j and above are fine for most plants. ---- Plant lamp manufacturers