Last bit of work update. I had stated earlier in the thread that one of my main objectives was to have the top of the tank open and unobstructed with the lights. I've seen countless tanks incorporate moveable light racks and just love the look and the convenience it offers for so many reasons... The lighting on the tan will be LED. I had originally planned for MH, but LED I feel is the way to go. Alot of people that have done the moveable light racks have used the kits by Stanley. They are very nice kits, but they weren't stock items here at either my Lowes or HD and I hate ordering and waiting on parts.
With that said I have a good supply locally of metal and went out and purchased "U" "C" channel and decided that I could cut my own slots into the channel to allow the roller to move the canopy. It probably would have been easier to buy the parts, but I wanted to have a little fun as well. I started off cutting with a cut off wheel, but got alittle lazy and decided I could do it alittle easier. I don't recommend this and I know I shouldn't have done it, but "Hard Heads make a soft A$$" as my old man always told me.....

I put a metal cut off wheel on the table saw and set the fence up and started my cuts. Actually it wasn't really that bad, but if you tried to rush or push through it, it did want to grab and take you for a ride.
I still have the intention to make the light rack motorized at some point since I have the motor and such laying around, but when I have more time to play with it I will. Here's a few pics of the tracks under construction....




