So, we are trying to get our rack system all set up and it's our first time using the CB70 tubs and this rack system. We want to make sure things are controlled before placing our ball pythons in; humidity, temperature, etc. So we want your opinions on holes in the tubs. If you think we should, how many to start and where is the best placement for them? Below is a picture of the rack system we will be using (from Animal Plastics).

http://www.animalplastics.com/Iris/1960(7).gif