I just got a 55 gallon tank (48" long) for free. The previous owner did not use it for water so removed the center support of the top frame. The outer frame is still in tact. I eventually plan on using the tank for a sump for my eventual saltwater tank. I plan to baffle it several times to make room for several chambers. With this in mind, how crucial is the center support for the tank? If I were using it as a display tank I would absolutely put something in. As it's going to be baffled throughout, I don't know if it needs it to stop potential bowing. Anyone have a good answer or a resource for me to look at? Or can point me somewhere that would have additional knowledgeable people on the matter? Thanks!