The LED fixture is my pride and joy. It's taken me countless hours to put it together and it's about 95% complete. Technically it runs now, but only on timers, no controller or fancy features quite yet. I'm waiting on a few Tycoon controllers to finish it up. I build a ballast/ project box out of acrylic scraps (haha, went through the bin) and it turned out pretty good for an amateur.
Here's a link to the detailed build thread it anyone cares. There are lot's of changes I made over the build, but I have a lot of pictures of the whole build.
With the analog dimmers I'm pretty close to minimum power. I've dialed them down to around 25%. With the controllers I will be able to dim smoothly from completely off to full power or anything in between. There are 8 seperately controlled channels. A channel of 7 CW XML on each panel as well as two groups of 6 RB XPG and two groups of 6 NW XPG. The royal blue and neutral white are for spectrum adjustment while the cool white are the main power.
I just need a par meter so I can figure out what this thing can put out. I think it is pretty darn powerful but it's hard to say without a meter. I'm hoping it's capable of SPS raised up and with only 52 LEDs total.