This will be my first time hatching chicks. I have 10 light Sussex eggs arriving on Tuesday. I set up my LG incubator and ran it for 8 hours with a steady 99.5 temp..I'm not sure if/how to manage the humidity. Do I need to add another gauge? It just has a water reservoir. I am already feeling very protective of these chicks? Plus, my 7 yr old will be heartbroken if they don't make it...