You could partition if out if it was 8 ft long x 1 ft tall x 1ft wide...but if it's 8 feet tall (high)...exactly HOW are you gonna manage that?
You'd have to get inside of it (if you are skinny enough to fit inside a 1ft wide space) to clean it...I doubt you're that tall lol. And I couldn't imagine (actually I just did and it was a pretty funny visual ) trying to get the fish out of it.
I think either your measurements are a bit off...or that is one odd, tall, skinny sized tank.