Hi everyone,
I'm wondering if there is any sort of formula to determine what would be an appropriate amount of ventilation to build into a cage?
I'm going to be building this:
http://redtailboa.net/forums/how-tos-tutorials/28742-how-build-4x2-enclosure-100-a.html
to house a red tail boa. One thing noted in the instructions is to base the ventilation on the snake's needs, the temp in the room, etc ....
It's going to be in my bedroom, so ambient air would be around 70 degrees, but I'm in the northeast, and it's an old farm house, so there's some variability.
This is my first foray into building my own cage ... I've relied on aquaria and purchases of other people's cages off of craigslist in the past, and been less than thrilled with those results .... so this time, I'm trying it myself 
thank you in advance for your guidance 
patti

