Hey im new on this forum but ive been growing outdoors for about 6 years now and i started my first indoor grow 3 weeks ago in my closet. its 4 feet side like 2.5 deep and i have 8 plants vegging under a 400 watt metal halide lamp. i was wondering how long i should veg them for before putting them under the 400 watt hps and switch them to 12/12? and if i should get another light like another 400 or maybe 600 watt lamp? they are all in 3 gallon grow bags with roots formula 707. i have roots grow and bloom and also the dry fox farm trio (open sesame, beastie bloomz, and cha ching) can anyone tell me how i should use these? id really appreciate any advice as im trying to get as much as i can out of these.