The moonlites are mainly for astheric purposes but nobody knows for sure what benifits they have on your tank. The moonlites are all controlled by 1 powercord they are always on if they are plugged in and can be set to a timer. The bulbs are rated for 50000 hors of continuos use and are fully warrentied for 1 year by Custom SeaLife. The independent controlls are for the PC
bulbs. The front and back row of lights each has its own power cord. The actinics go on one bank and the daylights on the other. You turn the actinics on first then the day lights. You than reverse the process when you shut them off. THen you have the moonlites turn on. THe are truly aweiome to see with the moonlites on.
If you are interested in buying one look in the sponsor special forums and check out the special i have on these hoods right now.