I got two pregnant mice from two different breeding groups. Should I leave them in their groups. Their in 35Qt tubs. Way big enough, but I don't know if I should.change aspen to something else for them. Hench I thought about moveing them and putting w/e special bedding they might need. Anyone got a clue on what I might need? Also if I did move them I have 2 10gallon tubs for them so yea.