"I'm no director of research - far from it... but my limited understanding tells me that plants do not use the entire light spectrum equally. In fact, they use quite limited amounts of white, yellow, orange and green"

Im glad you changed that statement. Plants use everything they can. So if we can offer a continues spectrum as full spectrum is jsut a marketing term, and dial in extra red and extra blue into the specs which my induction lighting guy can do then the plants are going to love it a lot more than standard and conventional grow methods. That is the inly point I am trying to get across that there is a better way and Id like to know what is the best.

Oh and from earlier a 600watt HPS draws about 650Watt from the ballast! (Heat wastage!)