First time hatching also, set my first incubator on 4/12 with 45 chicken eggs (white and light brown) and 5 duck eggs, set the second 4/17 with 35 chicken eggs (also white and light brown). Don't know what kind of chickens they are from, My dad brought the home, we are incubating for my grandpa because racoons keep stealing them from the farm.
Temp fluctuates from 98 - 102 and I hope that is alright, they are Little Giant Still Air Hova Incubator 9200 from my grandpa. I did have one really bad flair up with the digital thermometer and it read 106 - I'm thinking it was because the backing came off because I have fixed it since and the temps have been normal again. I candled the 4/12 batch yesterday and 1 was cloudy and 2 others had nothing going on. 2 duck eggs were also hard to tell but my dad said to keep them in and check the, again in a few days. I peeked at a few of the 4/17 batch yesterday too and they looked promising. I hope I'm doing it right hehe. I didn't think I would be this into it, I keep catching myself looking up hatching eggs for sale online