What were you expecting to see after 3 weeks mate? They are only just starting. I agree with the others, think HPS would be much better for you to flower with.
Holy shit, one question arabkush, does ur 400w produce alot of HEAT? if you can see my grow box thats honestly as big as it gets. I know im growing in soda bottles thats because my space is limited, i will be trying SOG cuase i just produced 25 clones. If i use HPS how many will i need?