Originally Posted by cajun chicken
Hello everyone! I have a few questions about my second hand Octagon 20 Eco. But first, here is my backstory...... This all started with a trip to the local co-op last spring for some fertilizer and ended up leaving with 10 chicks (5 BR and 5 RIR) and starting a chicken obsession. Anyway, a few months back I bought an Eco second hand. I did a trial run for a couple of days and it worked great.....99.5°F and 45% RH so we decided to set 4 eggs from my EE flock just as an experiment. I got 2 out of 4 chicks from that batch and have done 3 more sets since with not even 50% hatch rate. Each incubation I candled on days 7,14, and 18 and most eggs were developing as they should but they aren't hatching. I am following the instruction book and Hatching 101 but it seems like they are all dying after they go into lockdown. Can anyone help me out???? I am at a loss. Thank you!!
I agree with Friday, 45% is high in an Octagon. I've done a lot of trial and error with humidity percentages over the last year, and the only sub 75% hatch rates I have had were when the humidity was over 42%. I know many printed manuals recommend 40-50%, but that has always been too high for me. My best results have been right around 35%, no higher than 40. I am in the south as well, so maybe that has something to do with it. If they are developing, but not hatching, that really points to high humidity.
Are you having to fill both wells to get to 45%? If so, try running one well with the vent fully open. I bet if you drop to 35% you will have much better results