I'm not worried about aesthetics at all, I plan on building a canopy for this tank in time to block the lights from my eyes as I sit below the level of the light.
I'll have to take a close look to see if I can get screws into the rim without hitting the glass based on where the screw holes are in the T brace, but I know I could get screws into the part that runs along the plastic brace over the top of the tank. Thanks for the advice! Adding the screws would be a huge plus, instead of relying on the epoxy bond alone.
BTW, you guys have been awesome with your ideas and help - I really, really appreciate it!