just moved my trios from my small tubs to my bigger tubs split the 1.2 groups up to 1.5,my two other 1.5 groups have been producing 50 to 60 pups every 3 to 3 1/2 weeks is doing great so why not try it with the whole colony.there was a little fighting with one of the females but they settled down,the two extra males were put in the male grow out tub & MAN it looked like the UFC in there so I had to feed off the two mature males,it was something to see .only the two mature males were fighting even when some of the grow outs were just as big.will shall see in the morning if they are settle in or dead.