I have a different view on cohabitation then most people do but my advice for any person is in most instances do not do it if you have any alternative. Balls in particular are not suited for it.

I do cohabitate female house snakes and at times corns but not any more then my ability to add space requires.

I am not saying you can't do it just it is generally not the best idea,

I have posted at length explaining how it can be done this post got moved the the Quarntine Room (with good reason) but it fully lays out my view as to the facts about cohabitation.

http://www.ball-pythons.net/forums/s...ad.php?t=42654

Best advice with Balls though is do not do it. If you wanted to compromise though you could take a large enclosure such as a 55 or longer tank. Put heat on both ends and then put a devider in the center. In general BPs are shy snakes, some species do fine with multiples others not so much. The key is to do it you must

1. Know what to look for in regard to stress

2. Feed them out of the tank, NOT together

3. Be able to provide an alternative housing option if it does not work out,