pr0fesseur, I have been a lurker for a while now and you are doing what I thought would be a great source of lighting. I like the way you are doing and going with this, you are using Science. I was going the LED route but your testing has put that on hold for a bit. Many moons ago I played around with aquarium lighting for plant growth at a pet store I worked at with not great results. But this was 20 years ago. I was considering using another aquarium tool. Do you know of or does anyone know if there has been any experimenting using a light timer, such as the type used for Reef aquariums. I know there are people working on introducing far red into their lighting, you being one of them, and from what I have read the unknown is the timing. I am wondering if there is a chart of what nm's are present and at what intensities at specific times of the day. For example unless I misunderstood what I read, far red is present before the sunrise. Also the intensity of the wavelengths are different threw out the day so I see a timer being an asset. I believe some of the LED people are switching on only the far red diodes for a time before any of the others, and at the end of the cycle they switch off all but the far red. I believe 1 hr on both ends. I think it may be a cheap and effective way to squeeze every last bit of potential out of indoor lighting and improve the quality of the end product. I was thinking about using lights with only 2 bulbs per unit to make the switching on easier. Unless you know of a 8 bulb light that works on 4 independent switches. What do you think? Or am I wasting time on something that would make a negligible difference.