I'm using a hovabator still air for the first time. I have 2 eggs out of 46 which have just pipped. It has been in lockdown for 3.5 days already; they are hatching late, if at all, due to chilling. I don't have a hygrometer, am just using the recommended method of filling the troughs with water. But it seems that a few troughs are dry or close to it now, as it has been a few days. Previously, both windows had condensation on them, now one is dry and one just has a bit. What should I do? I am scared to open it up. Can I pipe water from my mouth through a straw in a vent hole to refill the troughs?