I have done MULTIPLE hatches since december. I use between 1 and 3 still air incubators. I have tried everything, temperature changes, humidity changes etc. I bought turners, I bought multiple thermometers and hydrometers. I ALWAYS have a ton of chicks who either pip internally and die, or never pip at all and die. I have eggs from different chickens, standard and banty and even eggs from a friend and the results are always the same :-( I have fixed a few problems, like I had the humidity too high at one point and chicks were hatching with edema. What gives?? I'm currently trying to find a circulated air incubator I can afford but why do they all do so well then die at lockdown? I've even switched the incubator I use for hatches so I can't blame one certain bator. I'm so sad every time I lose chicks I've waited so long for :-( this has happened with staggered hatches as well as one full hatch.