Humidity must have gone up in your house.I have an incubator question I have had to add water for about a week just to keep the humidity up to 35% now this morning I had to add water measured out for every 2 degrees to go up I have 4 temp/humidity in the incubators for safety one on each side. But now when I came the n from workout no all day it was down to 34 again but since I have been in here the last hour it has risen all by itself!! It's went from 34 to 37 and on one up to 40 even! All 4 has been within 2 % of each other any idea as to why that would happen?