I bought this incubator about a month ago. Worked perfect for 21 days, then on hatch day, everything went wrong. First, condensation built up way too high in the incubator and water started collecting in the digital display, even with the humidity control all the way open. The humidity was so high, the chicks wouldn't dry. Then, about six chicks hatched and I noticed that they all had bloody beaks with blood dripping down their faces, so I started watching. When the chicks would stand up under the fan, the vent holes are so large, the chicks could stick their heads up into the fan. The fan blade would smack them in the head, breaking their beaks. This is a terrible design. I snatched the chicks out of the incubator and put them directly under the heat lamp to try to save as many as possible. Then the high temperature alarm started going off on the machine (saying it was 219 degrees), the candling lamp came on and none of the buttons worked. The fan was still running so I put a thermometer inside hoping that it would still run long enough to hatch the rest of my eggs. The temperature dropped to 79 degrees and stayed there. The machine was completely broken at that point and I'm returning it.