I do not plan on starting this until after December, but I would like some information so I'm not going in this blindsided. I plan on growing Auto Ultra Lemon Haze with a 400w HPS. What time periods should I use for vegging and then flowering. And what kind of soil/mixture should I use? Any help is highly appreciated. Also, how far away should i keep the HPS and when should I water?
Use 18/6 for veg and 12/12 for flower. A lot of us on the forums recommend Fox Farm Ocean Forest soil. You can mix it with perlite at a ratio of 5 to 1 soil to perlite. As long as you are using a cool tube reflector, you can have the light as close as 4 inches away from the plant. You mentioned that your light is HPS which will work fine for flower and veg, however, I recommend MH for veg. It will promote better node growth. Water when the top 1/4 inch of soil is dry.