Ok....I have a question on my incubator. I put 60 eggs in the incubator on Wednesday February 4, 2015 about 7 pm. After candling on day 18 (2/22/2015), we got rid of 15 eggs that were not fertilized. The hatch date was supposed to be last Wednesday February 25, 2015 (i.e. 21 days). Two Birds hatched Friday night about 10 pm (approx one day late), 5 more hatched on Saturday by about 6 pm and 3 more hatched by Sunday 2 am. There are still about 35 eggs in the brooder. I took the live chicks out today and put them in a different brooder setup and also took out one egg and cracked it open to see a dead chick. It looked like it was about a day from hatching.... I have read quite a bit on this website and learned a lot. It appears that due to the late hatch, my temperature may have been a little low. Background: I have an incubator and a brooder both with digital thermostats (see pics) that I recently installed after purchasing them used from a guy for $150.00. I had calibrated both thermostats (brooder and incubator) and two other thermometers in an ice slurry at 32 F but obviously it must not have maintained its accuracy at 99.5 F? The incubator was maintaining the temperature between 99.0 and 100.0 very consistently (i.e. the heater would turn on at 99.0 and shut off at 100.0), according to the digital thermostat I installed. In addition, the other two thermometers showed the same temperature as the thermostat controlling the incubator. I had put all eggs on the middle shelf of the incubator and the probe was in the middle of the middle shelf. However, when we moved them from the incubator to the brooder on day 18, I had put the temp probe in the front 1/4 of the middle shelf and later....much later (like yesterday) noticed that the back of the incubator was about 1 degree colder (dumb mistake). In fact none of the eggs in the back half of the brooder hatched, until I moved the back half of the eggs to the top front shelf of the brooder yesterday morning (Saturday morning or approx 1.5 days past due date), where 3 hatched. So the other 7 birds all hatched from the middle shelf, front of the incubator...(i.e. warmer portion). I have a forced air incubator and brooder, so I think I can get it closer to maintaining a better temperature by moving the temperature probe to the middle of the incubator instead of the front.....but I knew that and just didn't on the brooder. So I guess the following are my questions... - Should I re calibrate my thermometer temperature up one degree for the next hatch? More? Less? I assume the temperature was a little low? I really don't know how to get an "accurate" 99.5 F...except using biology by identifying they hatched 1.5 to 2 days late. - Should I wait more days for the remaining 30 so eggs or has it been too long? I assume the back part of the brooder being "cooler" stopped or killed growth on the back eggs.... - Any other suggestions for future hatches? I plan on doing further hatches in a couple weeks and want to try to get a better hatch rate. I did have my humidity at about 45% for the lockdown....I know that is supposed to be too low, but all the chicks that hatched had no problems and the one I broke o pen was wet....and did not look like it was too dry....just looked like it died........ Thanks!