Allure is in a T8 that has lights installed into it. I don't really keep a regular schedule for his light or my fish tank light. My work schedule varies a lot with me working two jobs so usually I'll flip the light on before leaving for one job or when I get home. Never seems to make a difference to them when it comes on. Some days it I don't turn it on at all and he just gets the light that comes through my black curtains.