I need to get my humidity up, its at 30% and I don't know what to do. I have a fan, a light, a sponge in a bowl of water plus a bucket of water and I spray the eggs daily. HELP!!!!! Duck and geese eggs I need help; the temp is OK. I built a homemade bator made of walnut the heat and the ventilation is OK, but the humidity is so low, but I don't have a clue what to do.