Eureka! I have found the solution. I was told to put the the incubator in the formelite packing it came in. The temp is now up to where I want it and keeping it.
Following the above advice my next batch of 48 eggs I put no water in. I set the temp slightly higher from 37.5 to 37.6 degrees c because of the temp swings at night. The temperature was stable and the humidity around 48%. On day 18 I added water which brought humidity up to 68%. The chickens...
I have a 48 hdd egg incubator. I put 40mm of water in and the humidity goes to 65%. If I remove all the water it takes a few minutes before the incubator looses humidity and goes below 35%. I would like the humidity to be about 55%. This is my second batch. With my first batch I put 150mm...