Nice pair with some good size. That is a monster tank for sure, they should reach their max size in that thing. I might have asked you in the past, what type of tank? Be sure to post some pics once they get their new home.
The tank is a plywood build with a edpm liner. The window will be 8.5' by 26" once it's in the frame.
Tankmates to begin with will be some midevils and trimacs. If that works then I will add the rest of the tankmates and for that you will just have to wait and see