U Shaped Tank

I'm looking to build a U shaped tank to sit above the seating area of an outdoor fire pit entreating area. Has anyone had success with build a U shaped tank that is all interconnected as one tank, not three individual tanks?

I've researched a few sites and almost all site say to create three separate tanks and position them in the shape of a U, but I'd prefer to have one continuous tank if possible.

I'm thinking it will be 84" Long X 21" Tall X 26" Wide on the sides of the U, and 64" Long x 21" Tall X 26" Wide on the bottom of the U.

Am I creating a headache trying to make this a reality? Or has someone done this type of tank before that could lend a suggestion of two to help?

Any help would be appreciated.

Thanks, I have a concept in mind, just I've asked around and they recommend a profession build it since there is no divider between the tanks and I always thought it sounds easy maybe sometime like there needs to be a basic wall, but cut a hole in the side pieces to make it work. But I think my initial concept will work, I'll draw it up and post it and possibly get some suggestions within this post.