i have a closet size of 2x4x6. i am flowering 6 plants on the bottom of my closet and i am using 6 45W led grow panels u get from amazon.com lmao. they are around like $120 each... but im also using 4 4ft t5 fluos in the corners of my closet for supplimental lighting in addition to the LEDs... some reason i think it may be the LEDs... my plants dont have the stem strength to stand up themselves... and i have to use a post. maybe if you use HID or HPS that wont happen lol