I am getting more into breeding geckos now, and I'm planning on shipping the offspring once they are large enough. How large of a container should you ship them in? Also, what type of ventilation should i provide? I am clear that under warm temps, I should use a cold pack, and heat pack when it's cold. Could someone give me the guidelines (in terms of Fahrenheit temperature)? And if they are different, how do you weigh the departing temperature from the destination temperature and decide which to use? Thanks!