to grow good smoke.....first you need a good strain...then you need good dirt( i use sunshine professional mix) and you need the right amount of lumens per sq ft (light) 2500-3500 per sq ft produce great gardens

6ft x 6ft area 1000 watts
3ft x 3ft area 400 watts
2ft x 2ft area 250 watts

in a normal closet 3ft by 6ft 2- 400 watts will work great

look at my plant...its only 7 weeks old and 20 inches tall