highest temp that i have been at is about 102 and the lowest is 97.no the box does not have a lid it has flaps. i was thinking of just putting plasic wrap over it, but what do you suggest? i have had him in there since june 30, so i am thinking 23 days, right? it is in a cardboard box with a clipping desk lamp and then i have the egg sitting in straw. right beside i have a candy thermometre, and a low dish with a wet sponge in it, my grandpa told me that i shoud wipe the egg with a sponge during lockdown so that the egg moistens ( is tht how you spell it?)and the chick can get out easier.would it hurt it to put it in anything else right now? when i was candling i saw a very slow moving dark blob. i havn't been able to see much since they have such a hard shell. but i have seen th air sac and the blob that takes up about 1/4 to 1/3 of the egg, it has been very slowly growing so i dont think tht it is dead, but......and we took all of our styrofoam chests to the dump the week before we got him. so we are out of luck there, any other suggestions??