switching to 24-hour lighting after flowering finishes, shouldn't do anything, except waste electricity ... there is a lot of talk going around, that cutting off all light the last three days, increases THC production ... maybe, maybe not ... I've done it both ways, and I currently do the 'last 3 days dark' thing, BUT, ... I have seen NO difference, or improvement, so far ... since THC production is connected to the plant's defense mechanism, I could see how 3 days of darkness could 'scare' the plant into a last-ditch attempt at survival (more THC) ... darkness is free, nothing to lose by trying ... :smokin: