I've read in multiple places that it will kill your chicks if you open the incubator after day 18. I am on my first ever hatch (day 20) with a Brinsea Eco Max II, and I can't get the humidity up above 30% unless I open the lid to add wet sponges a few times a day, even with both sides of the well filled. I live in a very arid part of the country, at a moderate altitude (4800 feet). I've been trying to keep the humidity around 65% since day 18, but it drops to 35-45% overnight. Does anyone want to guess at how bad this hatch will be screwed up? What about recommendations for next time? Thanks!