So I have your average RTB (well, he's not average, he's awesome), who is about 9 months old. He's three-ish feet long and about 2.5kg. I also have two ball pythons, a male and a female, who are now almost two years old. The male is a little less than 2kg, and the female is right about as big as the boa.

I'd like to keep them in the same tank, as I have a very large tank for the pythons (who have lived together for most of their lives). Mainly, I'd like them in the same tank as it's quite large and simplifies my life, and the boa is now getting too big for the tank he is in. The boa is eating twice a week, and the pythons are eating once a week (when they're not being moody, but it's winter, and they kind of slow down in winter).

Anyways, I've kept the boa segregated from the pythons for purposes of quarantine. He's quite healthy and the pythons are of course healthy. I'm comfortable with them coming into contact (I've been careful to clean up before handling them in sequence, before cleaning tanks, etc, so they haven't been introduced in any sense yet), but I am wondering if there are any sort of procedures for making sure nobody gets unhappy in the tank.

The boa is quite easy going, and the pythons are, well, sweet like ball pythons are. It's kind of cute, they're inseparable.

Oh, the other thing is, seems to me now would be a good time to introduce them, given the boa is only going to get bigger, and the pythons are going to grow into their five-to-six-feet while he does that. I'd rather not introduce an eight foot snake to a pair of five-foot-snakes.