Honesty please save yourself the trouble,money and headaches. It's there got support and actually is a vital part of the tank.
A friend of mine took the center brace out, cut it, filled it, stocked it, it was good for over a year and half maybe longer. The front glass literally shattered!! Almost exploded! No lie. It attributes the disaster to removing the center brace. They put it there for a reason.
"When creating an aqua scape, strive for the beauty of imperfection, as its art and there is no wrong or right, it's left open for interpretation" James Findley