I'm on day 21 with no pipping. In a hovaBator 1583. I filled trough 2 as per the instructions and done have a way to measure humidity. Two questions: should I try to top op the water using a straw and syringe through the vent hole? I am figuring the troughs may dry out before they hatch at this rate. Also should I have the vent plug out yet? Thanks so much!