also, if you come on the board looking for advice, expect to get it and quit arguing. listen to the people who are here with more experience. generally speaking, they wont steer you wrong and your fish will be much happier for it.
i just read up on firemouths. one can be housed in a minimum of 27 gallons. more than one requires at least 55 gallons since they are territorial. seriously, research some fish that will work in your tank sizes