I have hatched several batches of chicks with the Little Giant incubator! For a still air, you are going to need to have 102 degrees in the incubator. 98.9 is DEFINITELY too low. The humidity is also rather low, but you'll be ok. Just be sure on the last few days to up the humidity to 60-75% I have noticed erring on the side of dry-ness when it comes to humidity has resulted in better hatches for me. This incubator is pretty inaccurate, and requires a lot of monitoring; and I'd recommend having an additional thermometer resting on top of the eggs to monitor temperature. The best hatch I got out of the Little Giant still air was an 80% hatch rate and the chicks were super healthy. Good luck hatching!