Ok so i have been looking into growing now, and my partner has said he would not allow any growing inside the walls of the house (he would rather have me just buy the weed from the dispensary) So i got him to agree on an outdoor grow cabinet. So i got some Questions... Fist off, How big would I need to build the cabinet (or find a prefabricated cabinet/Shed) For 5 or 6 Hydro'd setup? Is CO2 REALLY going to bring 35-50% larger yields? and is it really worth my time money, and effort? How can i best contain my area w/o bugs or other things getting in and contaminating the area? well that's about all the questions i have for now... thnks!
As far as the room construction, have you considered open roof? You can make a shed and use greenhouse glass for the roof. Or if you want to go the complete indoor experience, consider looking up plans for tool sheds, if you are going to do this right you are going to have to deal with a concrete slab for a foundation..