DWCHCanswered grow question 5 years ago Hells yeah! Personally, I do a 36 hr blackout (to the minute!, Studies show less than 34 and More than 36 have no or negative effects respectively.). Then switch to 1212 immediately afterwards.. my trials have shown a decrease in harvest time without sacrificing yields.. but it's your call...👍
Just time it so you're lights on at your desired time..
Cheers! Keep it Green!