I keep my hatchlings together until their first shed. I then separate them out into shoe boxes as they start to eat. Some hatchlings strike at anything that moves quick, so you have to be careful once they start feeding, and then up to about 24". After that they can be put together in groups of two or three without any problem.
Righttt because snakes like to travel in groups....
Co habbing is not reccomended for MANY reasons.
If you truly care about your snakes, please keep them seperate.
(this is not directed at Mr Deuel, as he seems to defend co habbing as if it were the holy grail. This is directed at newbies who might listen to his advice).
Snakes are solitary animals, and to force them to live together is something that I consider a form of cruelty.
If you put them in groups to live when they are only 24" long, an immature female might be bred too young and become eggbound and die.
If a snake regurges you won't know which one.
If a snake has a runny poop, you won't know which one.
If one snake get sick, consider them all sick. That is 3 vet bills instead of one.
We actually had a breeder here (dragonboy I think) lose not one, but two males this breeding season. It seems the females KILLED THEM.