eurobracing question

[coralbeauties]

I purchased a tank that needs a top frame on it. It is 72X30X24 high. It is 1/2 in glass. I ordered 1/2 in glass that is 3in wide to eurobrace with 2 four in center cross braces. Do you think this would be enough that I wouldnt need to install an aluminum frame around the top also? My original plan was to do both but I am thinking maybe the aluminum frame would be overkill.
thanks
Jeff

 

[Reefing Madness]

Generally there would be corner pieces also, along with the centers.