The few small holes in the incubator will provide sufficient oxygen for the eggs, and once you remove the plugs when the chicks hatch there will be plenty of oxygen for them...
Ok. I set it so I can feel the air coming out of the vent hole. I flipped the fan. Wantme to send a pic[
Ok. Now I should be set? I can feel air coming out of the incubator. Its warming back up.