Light Duration
Marijuana is a photosensitive plant, it will respond to the duration of light that it gets during a grow day and either grow leafs and stems (18 to 24 hours of light a day) or buds (12 hours of light a day)
- During seed germination/cloning I have the lights on for 24 hours a day (Day 1 to 10 of the Great White Shark grow)
- During vegetative growth I have the lights on for 18 hours a day (Day 11 to 54 of the Great White Shark grow)
- During flowering (budding) I have the lights on for 12 hours a day (Day 55 to 121 of the Great White Shark grow)