Basically the tanks are 4ft long barracks. Strips of glass are siliconed together to create a rectangular frame and then nylon fish safe mesh is siliconed over the frame. These are the dividers.
I think I might have an old picture I have had the tank for years but have renovate it a few times until I got it just as I wanted it.
The picture was taken back when the tank used to be filtered and heated using a drip system, before I added the mesh dividers and had new lids made. I really need to get updated photos but for now this will give you an idea of what the tanks are like.