Tomowro is day 18 for me and i know im suppose to add water to the 2nd trough im useing the havabator and remove the eggs from the turner and don't open it but my question is, what should the humidity be at? and is filling up both water troughs anough to last till day 21? if it doesnt last how can i add more if it can't be opened? thanks so much this is my first hatch