Manual Growing lights
when daylight is at its minimum. The opening and closing system is pneumatic and is controlled by a timer
or the climate computer. On a rare occasion, [...] temperatures could also lead to a high relative humidity (RH). If the RH rises above 80-85%,
the pollen is not released from the flowers and cannot be collected [...] should be closed 2 hours before sunset or 2 hours before the screen is closed.
If there is no light sensor available, open the hives at the following times: