u/Jaxsam12

I just got this old tank with some old equipment, and I’m wondering why there’s no braces in the middle sections? It came with those old style hoods with fluorescent tube lights. The glass is very thick, 5/8 and silicone looks great. I got it outside and filled it, no bowing or leaks (yet) and there’s no sign there was ever middle braces. It measures 27 inches high with 72 long 18 wide. Is this just a very old style tank? I’d still like to reinforce it in the middle but I don’t know what I’m doing lol any advice is appreciated