Hello!
I've done what you are trying to do on a small scale. (
https://hothardware.com/reviews/rock...uarium-project)
I'm afraid that what you're going to want is a different monitor. 32:9 is a thing that is out there and should be a perfect fit, better than my 4:1 effort. However, you will need to go bigger. The normal size is 49" but those screens are generally curved. There are some other options though, like these:
https://www.amazon.com/ASUS-PA147CDV...E6N4STL7G&th=1
https://www.amazon.com/INNOCN-Ultraw...9WR3SKR4/?th=1
Please share pictures of your project.