I have 2 incubator and I'm having a pretty hard time keeping the temperature stable. I have 9 hen eggs in lockdown right now after setting 36 eggs and the temp went up to 40C/104F so there were a lot of early deaths. This was in my Hovabator still air bator which is the first time ive used it. The 9 eggs are in my small bator now, a really old brinsea octagon forced air. But I candled them today since 2 should have hatched by now and the others should be hatching today or tomorrow but i cant see movement in any of them and a few of them still have a lot of light orange fluid in them. I candled them 2 days ago and 2 were ready to internally pip but theres no movement today 
When i first put the eggs in this bator for lockdown the temp was right then it dropped down and i had to turn it up but it went up to 39C and was still going up so i turned it down again and its sitting at 34-35C and i dont know what to do 
I now have 10 runner eggs (1 hatching next week, 9 in 3 1/2 weeks) and 24 hen eggs in my still air and the temperatures all over the place but i think i might have settled it at 38C now but when i open it to candle the temp drops and dosnt come back up so i have to adjust the knob again.
Could someone help me on keeping the temp stable and whether you think these eggs are going to hatch especially the ones in lockdown ?
thank you for any help!
The Birds; Pair Salmon Faverolles, Cochin xs, black rock hen, pair of saxonys, quartet of white campbells, pair blue bibbed call ducks, 1 khaki campbell, 1 rouen(mix), 1 bali runner, 4 cross ducks, 2 cross drakes, pair of welsh harlequin, trio bronze turkeys, trio embden geese, pair gold dutch bantams, 7 cochinx chicks.
In the Bator; 1 lavender araucana, 3 cream legbar, 4 lavender pekin, 6...
The Birds; Pair Salmon Faverolles, Cochin xs, black rock hen, pair of saxonys, quartet of white campbells, pair blue bibbed call ducks, 1 khaki campbell, 1 rouen(mix), 1 bali runner, 4 cross ducks, 2 cross drakes, pair of welsh harlequin, trio bronze turkeys, trio embden geese, pair gold dutch bantams, 7 cochinx chicks.
In the Bator; 1 lavender araucana, 3 cream legbar, 4 lavender pekin, 6...
So ive turned it down but im going to move the eggs back into the Hovabotor and lie them beside the turner if they even stand the slightest chance of hatching now! I just dont see what the problem is this time, ive used that incubator so many times and never had a problem with temperature. Maybe its just getting old?
