I did a search on this site to see if there is any information on whether tank lighting affects African Cichlid behavior. I would think there is some relation. It sounds like some individuals minimize the periods of light in their tank Maybe for cost, algae, whatever. I have a fairly new 210 setup and have been using the auto function on the led lighting which provides around 16 hours of light. I am thinking that the level of aggression in the tank goes up with the higher light level. I would bet there have studies of this and will continue investigating the subject. Does anyone have anything to share on the topic? Is there a reason I would keep the tank lit when we are not around to view it? Are some colors better than others? There is white, blue, green and red lights that are adjustable. I did read that some hobbyists use blue light to encourage breeding.