you'll hear many opinions, and mine is when your plant is 10-12 inches high, i just switch straight to 12/12. but that is for hydro,,,, can't tell if you have soil there.
kuri Reviewed by kuri on . To flower or not? First grow...Northern lights from Amsterdam Seeds. I'm going on wk. 5 for veg and the plants range from 13" to 16". My grow area is 6'long, 5' wide, and 8 ft. tall. Currently have 2-400w MH and one 400w HPS...when I go to flower I plan on switching a MH for a HPS. My lights are on a timer set at 18-6. So this is my question; would this be a good time to start rolling back my timer a half our a day to a 12-12 or should I wait? :confused: Rating: 5