Ramsayi
Very Well-Known Member
Condensation is formed inside the tub when air is exchanged, BECAUSE there is a difference in temperature AND there is water vapor in the air. Just because you can't physically see the water doesn't mean it's not there in gas form.
Water cannot build up in an egg tub by opening the lid.The humidity in an egg tub is much higher than the humidity of the room that the incubater is in.By opening an egg tub humidity will drop which in turn will dry out the substrate.