I have attempted to incubate chicken eggs twice now. Its a still air incubator. The first time I attempted I hatched 17 out of 40. The other eggs had either stopped developing at various points or weren't fertile in the first place. My second attempt to incubate eggs is down to its last 2 days and I have had to dispose of about half of the eggs that I started with in the first place. Am I doing something wrong or is this normal? First time - Temp was at 99 (the incubator thermometer says "good temp") Humidity for the first couple weeks was 55%-60% - per instruction manual I turned regularly, but didn't candle Second Time Temp was at 100 - I read some reviews that said the still air incubators needed the higher temps Humidity for the first couple weeks was about 45% and then 55-60% until present. I just dumped more water in because as I understand it there needs to be higher humidity towards the end. If things go the same as before I expect the humidity to shoot up to 75-85% once they start hatching. I turned regularly and only recently candled. Any advice is highly appreciated. I hate throwing away partially developed eggs.