I am having a problem with hatching eggs. I built an incubator with turner and a hatcher to do this because the cheap styrofoam ones were not large enough for the amount of eggs i was hatching. Listed below are the setting on both the incubator and hatcher followed by the issue that I am having. I had the same issues with the little giant incubators also and was hoping this issue would resolve itself by building the incubator with better controls for temp etc. Incubator has fans for heat circulation with 2-150 watt light bulbs for heat controlled by fully electronic thermostat set at 100 degrees and never drops below 99 degrees and does not go over 100 degrees. Normally keep the humidity during the first 18 days at around 30%. Hatcher has fans to circulate heat with the same source as listed above the 2 bulbs controlled by fully electronic thermostat set at 100 degrees that does not go below 99 degrees and does not get over 100 degrees. We keep the humidity at at least 50% during the last few days. The issue that we are having is around a 25%- 30% hatch rate. We do not keep our eggs over 7 days and turn them while waiting to go in the incubator. The embryos are developing but dying before pipping or dying after pipping in the egg. We can crack the egg after we know they will not hatch and they will be fully developed but just didn't hatch.We have also noticed some chicks are coming out of the egg with intestines partially sticking out where they were attached to the egg itself. I am needing some advice on this because it is killing our production. I thought it may be the rooster but I got eggs from another local hatchery and had the same results so that kinda rules out the rooster. Our flocks are well kept and fed to achieve the proper nutrients for their health and egg health. So I am at a loss on what to try next so I am hoping someone on here can give me some advice to move forward and resolve this issue. Thanks for reading and thanks for any advice offered..