I have tried on several occasions to incubate and hatch eggs. I am very new to this. I have an forced air incubator, automatic thermometer, hydrometer, and automatic egg turner. The temperature was set on 99 degrees so it went from about 96 when air not blowing to around 101 when the air was blowing. I have collected my eggs, set them with the air sac up, once let them sit out of the bator to acclimate to inside temperature, or sometimes put them straight into the bator once collected. Each and every time, IT NEVER WORKED. I candeled them on days 8, 10, and 11. Nothing there. I know they were fertilized because after day 15, and seeing nothing, I cracked them open and saw the "bullseye". I don't know what to do. I have had some porous eggs and still tried. I kinda know those would not work but I still tried. What am I doing wrong?? If it was because the eggs were porous, what can I do to fix that? I am not trying to have a million chickens or anything, but I want to have a few "from scratch". (sorry) . My hen will not sit and I am about to sit on the eggs myself. Second question - I have seen people say stuff about lockdown. From what I understand, that is the last few days correct?? Like days 18-21. Is that what I am doing wrong? Please help. Any advice or suggestions would be helpful.