I’ve never built a tank but recently had one built by glass cages. It is 108 inches long and they doubled the thickness of the bottom compared to other surfaces.
Like I said I have no idea why but you may want to research it. May also be dependent on what you plan to do, thick sand bed, amount of live rock, ect.
Like I said I have no idea why but you may want to research it. May also be dependent on what you plan to do, thick sand bed, amount of live rock, ect.