Dr.StickyFingers
Well-Known Member
While researching LEDs and playing with the idea of making a cheap DIY LED I came across this chart...
When vegging with CFLs or HIDs we tend to use 6500K. We don't use any 2700K while vegging and if some people do, not much.. At least I dont...
My question is and what I cant seem to wrap my head around is that the commercial grow lights that cost hundreds of dollars always seem to be using both LEDs in the veg AND flower end of the spectrum... and it seems that its always a higher ratio of red to blue even in full spectrum LEDs... which would be better for flower but not so much for veg... yet most people believe that LEDs dont compare to HPS for flowering (I cant say anything about this because I haven't grown with an LED yet....
Its not like Red is for chlorophyll A and blue is for cholorphyll B or vice versa. There are wavelengths on both the blue and red end wavelength of the spectrum that contribute to both A and B according to this graph....
Now this being said... wouldnt it be more productive to have a LED light for veg only that is more abundant in blue light and an LED for flowering that is more abundant in red light ? Just like using 6500K/2700K CFL or HIDs?
The reason I ask is because I want to set up a smaller room dedicated to cloning and vegging without having to worry about heat and room... also LEDs last longer and apparently is easier on the power bill.
Now, theoretically if I wanted to make a LED light dedicated to cloning and vegging only would I not want the vast majority of the lights being in the 410, 420, 450nm range with a couple of lights in the 620, 660, and the 730nm far red to acheive the emerson effect? say like a 5:1 blue:red ratio or somethin like that?...
Does anyone have any experience or knowledge in this field?.. I seem to be at a loss...
I rarely have to ask questions concerning cannabis/plants on here because my roomate is a bio sciences/botany major but even he was stumped when I asked this and could explain it very well... and he works around MJ plants growing at my university for research purposes...
When vegging with CFLs or HIDs we tend to use 6500K. We don't use any 2700K while vegging and if some people do, not much.. At least I dont...
My question is and what I cant seem to wrap my head around is that the commercial grow lights that cost hundreds of dollars always seem to be using both LEDs in the veg AND flower end of the spectrum... and it seems that its always a higher ratio of red to blue even in full spectrum LEDs... which would be better for flower but not so much for veg... yet most people believe that LEDs dont compare to HPS for flowering (I cant say anything about this because I haven't grown with an LED yet....
Its not like Red is for chlorophyll A and blue is for cholorphyll B or vice versa. There are wavelengths on both the blue and red end wavelength of the spectrum that contribute to both A and B according to this graph....
Now this being said... wouldnt it be more productive to have a LED light for veg only that is more abundant in blue light and an LED for flowering that is more abundant in red light ? Just like using 6500K/2700K CFL or HIDs?
The reason I ask is because I want to set up a smaller room dedicated to cloning and vegging without having to worry about heat and room... also LEDs last longer and apparently is easier on the power bill.
Now, theoretically if I wanted to make a LED light dedicated to cloning and vegging only would I not want the vast majority of the lights being in the 410, 420, 450nm range with a couple of lights in the 620, 660, and the 730nm far red to acheive the emerson effect? say like a 5:1 blue:red ratio or somethin like that?...
Does anyone have any experience or knowledge in this field?.. I seem to be at a loss...
I rarely have to ask questions concerning cannabis/plants on here because my roomate is a bio sciences/botany major but even he was stumped when I asked this and could explain it very well... and he works around MJ plants growing at my university for research purposes...
