I understand, We can try the acclimation box. I would try just 3 females and see if they adjust in first before adding any more, if any.I don't really like the thought of sending this crew away. I would stick with the only 3 before I'd trade them for new. I do appreciate the offer but I couldn't do it. If I was going to add more at this point I'd just leave them in acclimation boxes for much longer than usual and hope to avoid the aggression.