Quote Originally Posted by Harmony
Leds come in certain spectrums and you would need red yellow and blue at certain percentages. basically 5% red, 36% blue and 58 % yellow to get the suns spectrum at noon which is the most balanced light.
It is my non-professional opinion that this is wrong.

There's a big thread of LEDs over in the Advanced section... lots of pictures for you to see people growing with LEDs.

Anything is possible... so yes, you *can* do what you're propossing. Go for it!

As to the above quote, from my understanding, our plants needs red and blue... yellow is not needed. I don't know why we have 58% of yellow in there.
Again, there's a big back-and-forth discussion of ideas in the LED thread over @ Advanced.

Easy