I have 11 serama eggs in the bator on day 15 now. I plan to take them off the turner on day 17, just to be safe. I've heard a lot of people have them hatch on day 19. So, my question is, can I put a bowl of water on top of the screen with them to increase the humidity? I don't want any chicks drowning, but it's really hard to keep the humidity up in there. I have the bottom reservoirs full and two sponges as it is, and humidity is at 55%. I candled them last night and some of the air cells were quite big. Any suggestions for this?