We are a family of 7, living in Wyoming on 5 acres along with a few animals. I love to see how much we can do on a tight budget.- (I don't love the tight budget)ha! For the most part, if I can't make it or find it 2nd-hand; I'll wait till I can! I have been dreaming "Greenhouse" for 6yrs, and finding your blog makes me happy! I was up til 12p combing Craigs-List for supplies! I do have one question? "Do you not need more ventilation then the open door?"