Hi! I have a few tanks a 55 gallon, 37 Gallon,and 2 29 gallon tanks. In my 55 gallon Tank i have 2 Jack Dempseys. In my 37 gallon i have african cichlids about 6 of them. My problem is i think the africans need more room.Id like to move them into the 55 gallon and move the dempseys into the 37 gallon. Is this possible and how would i go about changing it?