My deal is my tent is in my shop. Is that to many my's in one sentence? lol. I do have a wood furnace,but can't cut enough wood to keep a fire all winter since I became disabled and can't afford to buy it. So I would have to run a sealed tent. Then I would have to supplement CO2, and have humidifier and dehumidifier with the heater. Also several controllers or one high dollar one. I have 2 600 watt Hids that I can utilize the heat from them plus remove glass when really cold. So would not reduce any light from bulbs, For that much money I should go ahead and build an insulated grow room and put a small tent in the house just for winter. Any suggestions?