I guess I could update a bit of info here.

2nd tray went in so fogfognugen is complete. We purchased 2 more TI ProBlooms for use over the second tray, also on the same light rail.
BTW, LEDs on a light rail help alot with penertration, there is a constant changeing of the "angle of attack" from the lights. Plus it is kinda hypnotic watching the damn lights move back and forth, constant changing shadows.

Most recently this summer we built another 2 trays so now there are 2 fogfognugens, and they are stacked on top of each other. We started using 2- 1000watt HPS lights on the second one, and I can confirm that 2-TIs totaling 660 watts can and does outperform 1000 watts (really 1040 watts w/digi ballast) of HPS. So saved 380 watts but got a tastier product. We recently changed the HPS for PSMH, using 3000k bulbs thru most of flower then using a 10,000k bulb for last 7-10 days. This has worked out better then the HPS and finish and taste is like the TIs. Only thing I did not like with the HID lights was the need to air cool the hoods, but with out that the AC was working too hard. This is BTW a sealed room.

As always I'm willing to answer any questions that anyone has, on or OT.
OM