Kees

This discussion has been focused on the measured CO2 value. I have not seen any statement on the location of the sensor. I have found that the location of the sensor is very important. CO2 is heavier than O2, thus measuring at the ceiling will give you a lower value than measuring at chick level. Than 3000 ppm at chick level can represent the same concentration as 1500 ppm along the ceiling. T ...