I keep three pairs in a 46 bow community tank and raised a lot of Bolivian rams. I always pull the eggs to hatch them and grow them out in a 55 with young angels.
If you end up with two pairs, I would try them in a twenty long. You could always move them if you had problems.
If you end up with two pairs, I would try them in a twenty long. You could always move them if you had problems.