The more girls you have, the more the aggression spreads out. It'll be safer for them with more girls, and I highly doubt that an extra girl or two will change Gy's personality ;)
It is important though to QT any new girls and cup the current three and rearrange a bit before releasing them all. Three girls, I believe, CAN work, but not often. They usually work for awhile before they start experiencing problems. You will likely have two gang up on the third one and will get some devastating injuries.
Some people also cup the girls and feed them individually. If you have a girl who is stealing from all the rest, you can maybe try just cupping her?
Last edited by AyalaCookiejar; 12-27-2012 at 01:11 PM.