Why don't you just buy a timer? What you should do is buy a timer that plugs into your wall and then buy a power surge and hook all your lights up to that, then plug that power surge into the timer that on the wall and automatically set it to turn on and off when you want. I dunno if you have a timer or not but the way you're talking about your light cycle it doesn't sound like you do. Much easier than manually doing it, and you really don't want any fuck ups with the light cycle when they're flowering..really. Not that hard to get, they sell them in the electrical appliance section of wal-mart.