I have a BP, just over 2 years old now that I am expecting to arrive next week. Im upgrading him from his 15-20 gallon glass tank that he was in when I was in Tucson, Arizona (hot and not humid), to a AP T8 to where I moved to, Detroit Michigan (cold / humid). I was hoping for a suggestion as to substrate to try first, in Tucson I was using Cypress mulch to help increase humidity, but I don't think it'll be necessary here, plus I assume this AP cage will maintain humidity better than the glass tank.