I have a 125 gallon tank currently housing around 20 assorted African Cichlids / Haps and 5 multicats. About a month ago my Electric Blue Johannis had a spawning event and I moved the holding female into a 10 gallon until she spit, and afterwards moved her back to the 125. I figured if other fish in the tank mated, I could just keep doing it this way. Now I have two additional females holding in the 125 and around 25 .5" fry still in the 10 gallon. Our area Petco is currently having their dollar per gallon sale. I've been considering getting another tank to house the holding fish and to also use as a fry grow out tank. Would I be better off getting a 55g or a 40 breeder? Any input from you guys would be appreciated.