If your HD light(s) appear to not be following your schedule or are not as bright as you'd expect, you likely have 'Lunar Effects" enabled during your daylight hours. To check this, please open the myAI application and select your aquarium. From there, choose "Effects" and "Lunar". You can then modify your start and stop times.
Additionally, the video link below will provide you with more information on how to create or modify your Lunar Effects.