So I am looking to update my hatching equipment...right now I have the typical school incubator....Styrofoam???? and my thermometer's only read temp not humidity. Until this year, I have had no problem with hatching. This year, sadly none of my ducks hatched...I do think it was a humidity problem

Many of my eggs became darker in color...but did not smell and I could see the ducks in there. I also had a challenge with the duck incubator with temp flexuating...my classroom temp is cold with air-conditioning and hot when they turn it off EXACTLY at 3pm. Made sure the incubators were not in a draft or by the windows. I am going to take that incubator to my local feed store where I get the eggs so they can evaluate my incubator and see if it is broken. The incubators with chicks and quails hatched just fine. I want to get a good thermometer....so can you recommend???? Also looking into an incubator should the one I have checked out be broken so looking for suggestions there too. I am a teacher...so not a lot of money but want good equipment so this doesn't happen again...sooooo sad