Thanks Harry! that is a real compliment coming from you. btw I went with c channel instead of square tube after seeing how successful your build was. Also your self tapping screw idea made the build very simple. So far the power supply has not ran hot. Maybe because its only pulling 2.9A of the possible 7.2A. I dunno, but I'll keep an eye on it. The original plan was to cut slits in the project box if need be.Looks like you've got it going on! I like it. One thing, you might want to get the power supply out of your project box so the fan can keep it cool. The pot on the power supply allows you to make small adjustments to the voltage. I think most of mine will go from about 45v - 52v.
I see you used thermostat wire. I was using serial cables until I did one tank that was farther away from the controller than the others and had to use a 12' cable instead of the 6' that I used on the first ones. The LEDs were noticeably dimmer than the others. I checked the current and it was only 210 mA. I replaced the serial cable with thermostat wire and it went up to 670 mA.
Now all you need is a controller!