so as far as the question of the life time goes once again i am having trouble with my humidity, i have takin styrofoam pieces wrapped in black felt and taped on the sides and back of my glass enclosure ( 20 L by the way) i have duct taped aluminum foil over most the top im using a ceramic heater, i have cypress bedding also sphagnum moss inside the aquarium, i have to mist at least a few times a day but when i leave for long period of time and come back its right back to 20 % i dont know if my reader is just giving me false readings or what but i have no idea what more i can do short of just turning my room into a jungle and letting my snake roam free. help please!!