Hi, I am planning to put some hatching eggs in my incubator next week and I having problem raising the humidity from 39% in my home made incubator cooler. My incubator is made up of chest cooler that is divided in two section. The first section is where I put the light, water, thermostat and the fan. The other section is where I place hatching eggs over three rows of trays. I have been trying to use different ways to increase the humidity level to 50% degree but have not been successful. If I close all the air passage on my incubator then I get lots of condensations over the glass which results in not seeing the eggs. I'd appreciate your help in the matter.