thats a larger tank than most give them.
I am not sure pbass work in 2ft tanks though?
If you dont have it or havent built it you could probably do a 9ftL x 30" or 36"W x 2'H
and have them comfortably
I had some success in the past with a big Trimac, they left each other alone in 800 litre tank. When I introduced a female dovii I had to get rid of Trimac as aggression started.