Is the tank acrylic with plastic outer bracing?
If its glass then you need to place a thick piece of glass instead of the aforementioned acrylic.
I really doubt that removing the thin center brace will change the light much.
Even If you do remove the center plastic and place a clear piece, you would just add to the tank maintenance, since it will cake up with humidity\muck and algae in no time.
It is mostly for FTS's..
Kind of petty... I know.. lol