Staggered Lighting

I have a fluorescent lighting system (with night LEDs) It is possible to stagger the lights to turn on and I have read a few articles on tanks that turn on the A lights an hour or so before the B lights and then turn the B lights off an hour before the A lights. Is there anything more than an aesthetic reason for this?

 

I understand what it simulates, but I didn't know if there was a chemical/biological reason other than it being pretty for me to watch.

 

Hum.... so, how do you regulate the moon cycle? is it an issue of just setting it to turn off on new moons? or is it some kind of a super smart dimer that slowly changes it with the phases of the moon?

 

I received an unfortunate email from Neptune Systems, kinda a bummer that their lunar simulator only works with their LEDs and not with the Coralife lights that I already have. Good thing for me I'm dating an engineer. I'll see if there is a workaround ha ha.