Normally on spectrometer led

I just wrote an experiment profile to keep it on for 20 hours and then turn off for 4 hours:

experiment_profile_name: Spectrometer Daily Cycle

metadata:
  author: Gerrit Niezen
  description: Cycles the spectrometer on for 20 hours and off for 4 hours to use the light for  microalgae growth.

common:
  jobs:
    spectrometer_reading:
      actions:
        - type: start
          hours_elapsed: 0.0
        - type: stop
          hours_elapsed: 20.0
        - type: repeat
          hours_elapsed: 24.0
          repeat_every_hours: 24
          actions:
            - type: log
              hours_elapsed: 0.0
              options:
                message: "Turning spectrometer on for 20 hours"
                level: info
            - type: start
              hours_elapsed: 0.0
            - type: stop
              hours_elapsed: 20.0