It did because I turned them on for effect. I only turn the blue light on at night, and it's 3 individual lights, no more. I like being able to see the fish when I wake up at night. Often I'm in pain so watching the fish if he's actually awake can be soothing and get me back to sleep. Usually, he's sleeping too, but occasionally I'll see him swimming, and even just looking at him sleep is calming. Oh and even just those three bulbs are always turned down in strength as far as they go. I always keep the light low a) because I know bright light stresses bettas and b) I've got eye and migraine issues so I don't like bright lights.