I just got the HovaBator 1588 yesterday..........Plugged it in and it is cool. Got my egg turner in there and everything. Holds at 100 degrees without me doing anything.......which is great. My question is about the humidity. I got a hygrometer.......got it working and it is holding at 65% which from what I read is a good number. I am getting ready to put my eggs in. Is there a rule of thumb about how much water I need to add to maintain the humidity. I think it said to add water everyday and I know it should be warm water (correct?).........is it about 1/2 cup........1/4 cup or anything like that or am I just supposed to test it out and work it own on my own because of all the variables here in my house. Any help is appreciated. Thank you.