My house humidity is almost 50 on the second floor and 60 on the first floor. I checked my hydrometer by putting it outside and it was 70 and the weather on my IPAD states that is what it is. So if I need to keep my chicks at low humidity to incubate, how can I? Aside from buying a dehumidifier which I am not going to do, too expensive and my house is large. I have read over and over how people use 35 percent for day 1-18. Welllllllllllllllllll I can't. I wonder if this is why I lost my last hatch. OH and how do you incubate in the summer? Often the humidity then is 80 percent. I am doing the happy dance today, I got a Brinsea 20 yesterday. Well it is ordered and will be here the end of the month probably. I am expecting SUCCESS NOW! But, this humidity thing is concerning me.