Visible light (wavelength 400-700nm), the equivalent of the blue, green, yellow and red, also known as PAR, for photosynthesis.The active area is the most important visible part of the plants use for photosynthesis. Blue and red is the most important part in the PAR spectral band, because the riboflavin in plants can effectively absorb the light of this part, while the green is not easy to be absorbed.
So normal led could be usefull to your plant for seeding,growing and flowering.
Ratio between red and blue depends on your require.Conventional ratio (red:blue) 7:2

Snake，do you have E-mail,Skipe or something like that?
domnic0723 Reviewed by domnic0723 on . Question about LED lights i have every thing for gowning weed but i have serious problem with light i live in Iran.in my country its will be very very very expensive if you want to grow weed under HPS or Halide light so i want to try LED lights i search in many web sites to get information about growing weed under led light but non of them give me answer to my questions.those sites just advertise there own products. i have many question please answer me even if someone ask them before. 1.should i use Full Rating: 5