you havent messed it up.. put water in the tray and itll shoot up. make sure water is warm!! i get best hatch rates at 36 degrees and you actually can makebit 36.5 on the incubator and thats the best..
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i use this incubator all the time in fact i have a couple of them... they are great and not cheap.. if the settings are right youll get a great hatch
you dont... you adjust what the desired humidity you want so that it can set an alarm for when the humidity goes below or above the desired.. you fill up the water trays and then read the reading..
NO one above knows what theyre talking about. I use this incubator heaps and heaps and all of my hatches have had 99% hatch rate. If you put in fertile eggs THEY WILL HATCH IF YOU SET THE TEMPERATURE RIGHT!!!!!!! this incubator is the best out there apart from the im (cabinet incubators)