how much less do you think the yeild wil be? like 20% less? my concerns are its in the back yard and i have no filter for the box its reall stealthy no light leakes but the smell reaks at night you walk by the front yard of the house and you can smell right were it is coming from..its a litlle concerns that if i dont gett enough advice or help i might end up leaving them there unfortunetly i didnt write down the day i started flowering so i have no idea but i think its 2 -3 weeks in to flowering