I am about to start my first ever hatch. I purchased a Hova Bator 1602, and I am about to turn it on to let it run for a few days before the eggs go in. My fist question is, how much water should I put in? Should I fill up just the middle area, and should I cover any of the surface of the water with foil? Also, it says over 6000 feet that I should pull the red plugs out of the top. My city is at 6035 feet so it is right there. Should I leave them, take them out, or maybe take one out? Sorry I have so many dumb questions, I just want my first time to go well! Thanks so much!