I'm planning on brewing in my basement, where I have a easy source of natural gas. I see burners up to 300,000 BTU and I'm wondering how much I need? I'll be heating sparge water in a 7 gal. aluminum, and boiling the wort in a 10 gal Polorware SS pot. Does anyone have experiance with this type of setup? Is it possible to have too many BTU's and not have enough control on the low temp end? What works good for you? I'm planning on an exhaust fan for the room. Thanks D.W.