The T8 bulbs were tested in the Slimline T8 fixture http://www.amazon.com/dp/B0002QI86U/
CooperDragon":1sftqlem said:I'll gladly have a look at the charts. The data from Yahoo shows some really interesting patterns and depth differences with the MegaRays. I didn't see any Metal Halides but I recall reading a post from Bob about the metal halide being a mid day bulb and shouldn't be used all day (I believe you may have posted in that one, I can't remember) so I'd consider it as a compliment to existing lighting. Would be interesting to read some data on their output.