Your tank looks awesome! Where did you get that canopy? I have twin 72g's and I hate the blinding amount of light that comes out of my raised fixtures.
I can't find a premise canopy for less than 400$, and I live in an apartment so I can't build one.
My canopy came with the tank when I got it from a guy off of craigslist. It is actually plastic and super light. He said he paid 150$ from some online store but had to build it himself, which consisted of glueing 5 supports on the inside together to hold it up... good luck!
even though it is palstic, it looks perfect up there and doesn't look cheap in person or in the pictures at all.