guys i see alot of people using jacks i hope your getting good results. because this last grow i used advanced nutrients and my weed smells / looks amazing and i used a little bit of uva/uvb and the weed gets me stoned into outer space! i ended up throwing away alot of my harvest because of mold but at the end of the day what i managed too save gets me blown into cloud 9! so all i can say is i hope you guys are growing some good quality potent gas using jacks!