During the hatch and humidity rises, but by how much? I'm having a heck of a time getting my humidity up. I have a forced air and I'm on day 19. If I turn the fan off will the humidity go up any? I have a large cake pan with 8 sponges standing up in it. I poured boiling hot water in it to start and the humidity went up to 69%. It then stayed study at 45% and has now in the last hour went up to 50%.