never done this.....i'm very serious about my grow.....I know when my lights come on and when they go off, I never go in at lights off, except once a month 20 minutes before lights on to check for light leaks, i sit in there for like 15 minutes.....I check my timers 2 or more times a day, making sure they have the correct time, making sure they are on and off when they are supposed to be.....
it's my life.......