Wait to go to 12/12 once you see the signs of pre-flowering. There will be early signs of sexual development and stuff. After this starts you can keep it 18/6 for longer or start 12/12 a little after this starts.
rnf232s Reviewed by rnf232s on . 18/6-12/12 (when) hi ppl how many weeks/months do i have to wait b4 swiching my light cycle to 12/12,im using hydroponics and started from seed,thx guys!! Rating: 5