Ever since I started with my two MarsHydro 300W grow lights (which I am very pleased with) I got very interested in that entire grow light/LED technology. Spectrums, LED ratios, different types of LEDs, the usual.
I am getting increasingly interested in DIY and I came across several threads on various places on the net.
I am especially interested in COB lights.
So I found some threads on the internetwebs where people recommend, say those 10x10 CREE Cree CXA3070 LEDs.
A typical lamp would be like this:
Basically mounting the LED to a heatsink, fan, get a driver...and that's it. (All that I can easily do).
There are even DIY kits available
My question is about the LEDs in particular. People say they are incredibly good and effective, especially the CREE. But those LEDS are white!
For me as coming from a grow light with RED/BLUE and some WHITE this is odd. Doesn't this mean that a lot of energy is wasted on the green spectrum? Why are people having good results with those white LEDs?
Would it be better to go with COB that has "full spectrum" reds and blues and some whites or is the white light really "better" for growing?
I am getting increasingly interested in DIY and I came across several threads on various places on the net.
I am especially interested in COB lights.
So I found some threads on the internetwebs where people recommend, say those 10x10 CREE Cree CXA3070 LEDs.
A typical lamp would be like this:
![cree1.jpg](https://www.420magazine.com/gallery/data/500/cree1.jpg)
Basically mounting the LED to a heatsink, fan, get a driver...and that's it. (All that I can easily do).
There are even DIY kits available
My question is about the LEDs in particular. People say they are incredibly good and effective, especially the CREE. But those LEDS are white!
For me as coming from a grow light with RED/BLUE and some WHITE this is odd. Doesn't this mean that a lot of energy is wasted on the green spectrum? Why are people having good results with those white LEDs?
Would it be better to go with COB that has "full spectrum" reds and blues and some whites or is the white light really "better" for growing?