How are you heating it? Everything looks OK except for the water bowl being a bit large. Your hiders will work but hatchlings like smaller tight fitting hiders. I use a paper towel roll that is cut in half length ways. Although you will soon find that your corn will just hide under that paper towel. If you you lightly mist it and get it damp it will stay down even after it dries and the corn will not be able to get under it as easily. Make sure you have a super tight lid because small corns can escape with just a small crack.