I built a styro incubator with using a computer fan, hotwater heater thermostat, and a lightbulb. I put a container of water in it with a wick but the humidity is only hanging around 30%. How do I get the humidity up? Maybe the fan dries the air too much. I tried plugging all the vent holes but it only raised it 5%. Any suggestions? I just set eggs in it today until my broody hens decide to sit.