Thanks CrazyPuy. I purchased two 4' long by 1 1/4" wide by 1/8" thick sections of steel from Home Depot. I secured the two pieces together to give me the length I needed. I simply bent them at a 90 degree angle so that the light could hang over the tank. I secured the bottom of the 'support' to the inside of the stand's frame and the AquaMedic pendant to the other. I required some changing out of the pendant's hanging hardware to give it a sleek look, but I found what I needed at Ace Hardware.
Using scrap Walnut left over from the stand build, I built a simple vertical enclosure to hide the bulk of the metal support as well as the wiring.
I think it turned out pretty good. Looks better than what I can show in the pics.