Ok sadly im experiancing horridly cold temps 10-15 f average now. My gl120 tent3'11"x3'11'x 6'11' stay quite warm during lights on and there's no issue there, going to 12/12 is concerning me mainly due to the temp becoming an issue after 4 or more hours in dark. I also have two auto's in a closet under t-5's that are experiancing slight wilt from cold. First two are auto jack and auto b respectfully lol, then i got some dog og and one medicine man. The one dog in pic three is the one thats experiances the wilt, the rest seem to deal with it fine. Now bear in mind i have a large house and the gas heater that's on the first floor only heats the living room and two other rooms by vents in the damn wall(old school style not my fav by far) so its hard to keep all three rooms even remotley same temp. Could i put the autos in thick blaco contactors bags during dark and not tie em off just leave the bags over them so there lighttight not airtight and keep em near the heater? The tent im thinking i can just attach like 20 feet of 4inch ducting to the heat exaust and have it blow into the room or tent periodicly during 12 off cycle. Any other thoughts or advice id welcome.