Hey I have a quick question. I know this might sound kind of lame, but it will bug me if i don't ask it..... On all of the stuff i have read on this site, it said not to open the incubator during the last 3 days of incubation on waterfowl. What if the humidity goes down and i need to add some water? can i open it to put some water in or should i just leave it be? Thanks.