I have the space for a custom aquarium of 76" long. I live in a 2nd floor and in my country we build in concrete completely, but anyway, I want to make sure that the floor will support the weight. It will be placed along an outside wall and the only place avaliable is 76" long, I want an Aro and some bichirs, so I want to make the aquarium longer for the Aro and my only option is to place the Aro in a L shaped aquarium. How long should be the 2nd arm of the L? The width will be 30" and the height 24", I don't know how many gallons they'll be, but I'm sure that the Aro appreciates more the measures that the gallons. What do you think? The corner of the L won't be a problem for the Aro?