So what is the right RH? It really and truly depends on a number of variables: If the air is too wet (high RH) then they risk drowning, or not being able to maneuver into a position to hatch. If the air is too dry (low RH) then they lose water too rapidly, dehydrating sometimes to the point of death. ![]() This is normal and necessary or the chicks will drown. Why is RH important? During incubation, eggs with live chicks release water vapor and CO2 to the atmosphere. Technically, you can’t go more than 100%, though I have seen RH meters show higher than 100. Relative humidity (RH) is a percentage of moisture present on the air compared to it being fully saturated. Unlike temperature, where you can aim for a number that you know works, RH is, well, relative. Or you can turn off the incubator and then turn it back on again.Humidity in the incubator is the most confusing part of hatching chicks. TO EXIT THIS MODE: Either press and hold the cooler and warmer buttons for (5) seconds and release. Here you can adjust the humidity to your trusted hygrometer. When released, the humidity calibration screen will appear. While the incubator is still on, press and hold the cooler and warmer buttons for 5 seconds.Run the incubator until your thermometer and LCD are reading as close together as possible.– 1 degree) You can add or take away temperature until it matches the desired instrument (thermometer/hygrometer) you are using. If you are 1 degree high (101), then you’ll need to use the cooler button to lower temp. Use the temperature up or down button to adjust the command center.You will see “SET TEMP” and either a (+ or – number) (example: -1.0) The factory default is -1.2.After holding the two buttons for at least (6) seconds, release them.While holding these buttons down, turn power back on to incubator… hold buttons for (6) seconds.Press the Cooler and the Auto buttons at the same time and hold them down.Set your LCD to (SET TEMP 100) degrees and give the incubator time to stabilize. ![]() GQF Cabinet Model 2013 Download Follow these instructions to re-calibrate your Command Center 3258 If you planned to buy 2 1502’s, why not get the Brinsea 580 instead? If I were starting over buyng incubators, that is what I would do. I see many cases where people get 2 or more 1502’s. It is interesting to me that on the Strombergs page the Brinsea 580 is exactly twice the price of a GQF 1502, and the 580 holds exactly twice as many eggs. ![]() If you have the money to invest, buy them instead of the cheaper domestic incubators, you will have better hatches.
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