There are many such indicators of technical parameters of plant growth lamp, Eb (w/m -), Ey (W/m -), Er (W/ -), par (W/m -), Eq (mol/m - /s) represent what meaning?
The red and blue light on the growth of plants and the greatest impact on the market, so the ratio of plant growth lamp are basic beads with the two kinds of light.
As for whether it is harmful to humans, because the product is simulated in the sun's several wavelengths, for people, according to this light is equivalent to the sun, and there is no ultraviolet light, it should be harmless.
Plant growth lights work by simulating the wavelength of natural sunlight to promote plant growth.
