Manual Growing lights
equipped with a blue hive door (in the visible spectrum for bumblebees) and
has a special, flower shaped, UV pattern around the entrance of the hive to [...] used for this. It is also important to give the
bumblebees the opportunity to work during the hours with the most daylight. Therefore, we advise using an [...] 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 by the bumblebees