Great journal borntorun. I'm in the process of researching different lights for my future grow room. I see you only use the T5's have you ever used HID and if so which one is better? The t5 or hid.
I have used HID and originally thought about combining both. I think where HID really performs is the final 4 week although , my feelings on that are changing rapidly as I use the VHO bulbs on the Solar Flare.
I like the t5's for these advantages
The main one for me is to be able to "adjust" the spectrum as the grow moves along. Both units allow you turn off various sections of the unit. If you used the the light from germination through harvest you might start out with just two bulbs at 6000K and the rest turned off and then add bulbs and tweak with the spectrum as you go. I veg under cfl and just use the lamps for flowering though.
If excess heat is an issue t5's are the way to go. They don't radiate much heat downward at all, so you can keep them way closer then a HID unit and that give you way more intense light and penetration. Typically I'm only running a couple degrees warmer in the center of the plants then the room temp.
There is no ultraviolet produced and in my opinion fire hazard is reduced a lot.
Another big advantage is the coverage and penetration, at least on the 12 bulb units. You are basically equally covering a 4 foot square area. The reflectors don't let much light fan out to the sides. Both boxes are getting some pretty good penetration all the way down to the soil.
I'm running them at 220 volts which was nice for me because of the circuit requirements. The Solar Flare you have to order as 220/240 and the Bad Boy just senses what voltage is available and does whatever it does to make it work you just change the plug end. The Solar Flare has an outlet on the unit to let you daisy chain the lights together, which is what I'm doing, so you can use a cheap mechanical timer. Can't remember if the Bad Boy has an outlet on it.
When you are working on the lights you don't feel like you need sunglasses or sunscreen on.
Without all the duct work the light lifting system is real simple. I just use those ratchet pulleys that Ace sells for 10 bucks. They come ready to go with the hooks and cord. The bulbs get surprisingly hot, like too hot to touch hot. So a good lifting system is essential. I rotate the beds 90 degrees every week or so and just crank the lights up out of the way while I'm doing that. I use some wire to just bend the tall plants over so everything is close to the same height.
They seem a little slower to finish but I can't tell for sure if that is the strain (which is suppose to be real fast finishing), the lights or the temp. I'm getting incredible buds so not too worried if they take a couple weeks longer.
I don't really have any negatives and the jury is still out on which unit is the best. the Solar Flare is 1140 watts and 90,000 lumen and the Bad boy is 648 watts and 60,000 lumen. So the SF is 79 lumen per watt and the BB is 92. The BB cost less and so do the bulbs. Although the difference in bulb price is only a buck or so.
Anyway I hope this helps