question .. how big is ur room or cab or watever ur growing in???? if its big enough to stand in.. well go in it .. right before lights out and see if any light is coming in.. if too small.. id go around any areas and cover the entire thing with panda film.. white side facing the box and black side facing u ., to make sure u have no light leaks..
another thing.. what genetics/??? bag seed? more then likely bag seed will produce hermis or females that stress and self polinated and have hermi tendancys. sucks but ive grown good grows with bag seed.. just need to make sure to have as little stress as possible..