I started having trouble with mine towards the end of this hatch. I discovered the thing was going through nearly a half a cup of water an hour. Every time I checked the humidity well was empty.My incubator is having humidity trouble as well. I added hot water to the tray and the humidity was at 70%. Couple hours later it was back down to 50%. I added a towel with water and will check again in a half hour. Both plugs are out so I think the humid air is escaping.