Quote Originally Posted by budderlvr
Would you recomend going with the LEDEngin red at 661nm?
Well I certainly would recommend 661 over 635, since it produces roughly double the chlorophyll activity.

Keep up the good work.
Opie Yutts Reviewed by Opie Yutts on . budderlvr Modular LED Project I am working on a new modular LED grow light. This thread will be a diary of my experience as I work through some of the many design problems. Currently I am at the circuit design phase. Although I do not want to reveal too much of my design at this point I will provide some information that has guided my decisions. The LEDs I will be using are from Lumiled. I am using the Luxeon K2s for the blue spectrum, and Luxeon IIIs for the red spectrum. The ratio of RED to BLUE (I will call Rating: 5