ok, im sorry, i should have explained better, i understand the basics of sexing but wasnt sure if there was anything early i should pick up on, and i know i should have had the lights allready, im buying a 150w metal halide setup this friday unless im advised otherwise, i didnt expect the seeds to even grow to anything, i have about 40more, i'm expecting to grow 3 plants in 4" pots an area of 5ft by 6.5ft high, with a depth of about 2ft, i have two 100mm ventiallation fans which i can duct directly outside, also i have a 600w ceramic bulb to gain heat if need be, but the room is at a constant 20c, the smell doesn't really matter too much.