that would vary according to how much your humidifier puts out ,the length of your misting and the type of humidity/ enviroment you are trying to acheive (not to mention over planting and design of your cage), the only way to know is to have a digital hygrometer with a probe, zilla makes a decent digital thermometer/hygrometer with a seperate probe for each ,for about $20 it also records highest and lowest readings. you may sort of be able to guess temperatures (not recomended), but humidity is impossible to guess accurately