Whoa relax with the wattage my
Friend. 40w/ft^2 or 60w/m^2. Lumens are The brightness the Kelvin temperature is the appearance of the light color spectrum. 2700K and 6500K; 1. Soft white 2.Daylight. Also, LED panels, bulbs 12000w is a power bill more than you're payments on any benefit. LED's 10w=120w incandescent. 12 in a 9x9 room? 12000w in theory I hope you mean. All depends on strain and the way you vent, light, space. Idk man. Why not 8 or 6 let them grow ya know? Lol weird question. Happy harvest