im in new mexico with very little humidity and mine is at around 6-65 during the day and around 70 at night, i also have 16x16x30 reptibreez with a plastic shower liner very snug around 2 sides of my cage 100 wat heat bulb, a hibiscus, a 5 foot piece of a pothos vine with the end in a water bottle, an umbrella tree(its small maybe 8 inches tall including pot) and a dracanea, the 100 wat basking bulb keeps the very top at about 95 and i think thats the main reason why my humidity stays ok its also on the same side as my liner so no heat or anything moves through the left side or the back.. it just holds it in.. and before anyone says anything yes i do have a uvb buld lol