Ummmmmm........ You have to be joking?! ......Right. If you have a 3' fish in a 55 that gives a 3' fish NO ROOM.
a 55 is 12" wide. You can't turn a 3' fish in a 1' tank. and they will and can surpass 3' There are places that "rescue" these large fish and others and They suggest a 10'x4' tank at least to keep one of these RTCs for life.
No No I am only joking. My long term plans for my RTC involve me buying a larger aquarium, I just need to find one. Not saying money isnt a problem but i have money in my budget for one.