I saw a video on you tube about a rocket mass heater in cold weather climate and aquaponics in a geodesic dome greenhouse. Very sharp individual. Type in "bigalow brook farm rocket stove". Hope I'm not breaking any rules on this forum, and hopefully this will give you some ideas. I am currently building my first prototype rocket stove. Nice job on your build! Good luck and let us know what you come up with. Aquaally