Last time, I set 130, candled and culled to 83 and ended with 51 hatched. I don' have any idea if that is good or bad. I think bad, but it's because I found a cold place in the bater. I have marked all the eggs by position in the bater and I believe I have fixed the temp. Right now, I have 3 thermometers in there and they are all reading the same. I rotate them to make sure. Lord willing it will work. This homemade bater stuff is fun, but it seemed so simple when I started.