does anyone know exactly how much can a 400 hps light yeild? and also have anyone ever ordered white widow seeds from cannabis.com because i have and its been over a week now. also if i want super duper dense buds will my 400 watt give me that denseness? and how many square feet can i cover with that setup? and has anyone ever used fox farm ocean forest and if so what kindve nutrients did you use? thankyou anyprofessional advice would help