Thanks. I made one from a styrophome cooler so it will be me turning them. I have 6 to put in and I'm pretty sure all are ready.
How often during the day should I turn them?
I like to put them in at evening time, that way I go to bed and wake up to fluffies... Less temptation to assist when it requires I stay up all night
The only heat source we have is a wood stove, so in the incubator room I have a small space heater and I set it to 73... I used to have those problems also with low temps during the night... They should be ok but expect your hatch to be a day or more late.
I have a styrofoam incubator (little giant not homemade though) that is still air. Like AmericanMom I do not have forced heat and rely on a wood burning stove for heat. I also do not have AC. Keeping the temp regulated was a pain my first time around. I babysat those eggs every hour and when it was over 100 degrees it was every 1/2 hour. In the end a temp spike of 106 on day 15 cooked the four eggs that made it to lock down. That first batch I did a dry hatch and the air cells were perfect! The chicks were developing on target.
This time around I moved the incubator to the bathroom and have been able to keep the temp more stable. Night is an issue so I'm still fine tweaking it. I do a dry hatch so I don't add water at all until lock down. From day 1 to 18 my temp runs 101 and humidity is at 30%. Now that it is colder (more rain too) the humidity is running at 40% and the air cells seem a bit big to me at this point, I'm on day 9. I have 18 eggs in there and when I candled on day 7 to mark the air cells there were 8 eggs with definite movement, four that I'm pretty sure were moving but not willing to say for sure yet. I'll candle again on day 14 to mark air cells again and check for movement.
When I do need to adjust the thermostat I plug one of the vent holes. On the LG 9200 still air the thermostat is to finicky to be moving unless it is a big temp jump.
ETA
I set mine right before I go to bed because it makes it easier to count days.
I also use the egg detail and incubation record from the hatching 101 page in the learning forum to keep track of my hatch.
https://www.backyardchickens.com/a/hatching-eggs-101
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