I'm planning on ordering some dubia roaches and I'm trying to get their place set up. The thermometer I have has read around 73 degrees and 42% humidity since I turned it on and put it in the enclosure a few hours ago. It's an all living things brand digital thermometer/hygrometer and my setup is a Rubbermaid tote roughly estimated at 1.5 ft l x 1 ft w x 1.5 ft h with egg cartons inside and a reptitherm Under tank heater meant for a 10-20 gallon terrarium strapped to one of the sides. Is my thermometer busted? Is my enclosure so big that the temperature wouldn't change more then a degree or 2? Do I just need to wait longer for it to heat up? Please any help would be great.