That's what I thought you do most still air hatchers do . Just make sure your temperature is 101.5 at the top of the eggs . Guard against temperature spikes . Those are deadly. Are you incubating at this time ? Have you calibrated your thermometer and hygrometer ? What are you using for a thermometer a hygrometer ? Always good to double check those . Temperature is the most important stay on top of that . I do a preset candle checking for cracks and dethatched air cells pinholes in the egg and porous eggs . Pay attention to air cells at this candle and look for air bubbles sure sign the egg will go bad . You can candle as often as you like your in there all the time anyway. Fresh to ten day old eggs will have next to no air cell. Veins should appear around day four . I'm not sure If I have the chart for air cell growth . If you need os just ask . I may be telling you things you already know . We can put together a small army of helpful hatchers if you need it just let us know .