Me too, turtle420. For me it's just an academic interest as I don't grow but I definitely will if it gets legalized for medical or recreation in my state. I will have some pics from a grow operation in Europe using the sulphur lamps in about 1 1/2 months so I will post them as I get them.

As for the LED grows, until I get that movie from a grow movie using LED's my hands are tied. However, NASA knew they worked and if their claims are false it's a massively detailed scam, to the point of improbability. I think they will grow cannabis just fine. The main question I have is potency. Cannabis plants produce resin to protect their leaves from UV rays and from drying out. Without that heat stress I'm just not sure if resin production would be as high. Just like weed grown outdoors is stronger because of the sun compared to indoor weed.

Interesting question but one I would not be able to answer.