I am thinking (well, dreaming at the moment) about setting up a large greenhouse 30' x 100' to start my own business of selling tropical plants (Cps and other oddities), fish and reptiles. I've been searching online for greenhouses and one type sounds and looks like a good deal from http://www.growitgreenhouses.com (no endorsement intended just for refferance as to what I think is what I could use I'm looking at the System 1 30' x 96' http://www.growitgreenhouses.com/com.../30x96_1.html) but I'm wondering if it's enough to withstand a MN winter (rare but occasional -10*F to -30*F in January). They come prefab with oil or gas fired heater, fans, gables, twin layer poly, inflator fan, circulation fans motorized vents and exhaust fans (evaporative cooler extra but I would get one) there is light construction to do including floor and baseboards but no problem. I was also wondering about water and electricity hookups for a semi permanent structure like a commercial greenhouse?
At the moment I'm only dreaming (as I said) but if anyone would like to give me some of their experiences to read and think about it would be greatly appreciated Even if I never get around to actually setting up a greenhouse I'd like to know what I have to do.
Thanks for any thoughts!