1 Box 2 Autos (40x40x120)

Im so sad, the box is outside and the temerature getting worse and worse. when the lamp is off its getting 3 degrees in the box and thats really to little for the plants.. im growing with 23/1 lightning time so i decided to sett the lamp to vegi and flower mode at the same time to warm the box up and when its getting cold for 1 hour there should be enough heat to keep the plants warm... well very big mistake, after 14 hours i took a look and it was 35 degrees in box and the top flowers and leaves are burned thats why they are looking so misserable. now i sett the lamp to 24/0 lightning time with flower mode only, but i really dont know if the little flowers survive the burns because the first few weeks in flower stage are the most important ones. you dont see it in the pictures but the top flowers look really bad like the hairs are brown. im so sad and i really dont know what to do to help them, if anyone had same experience with burned flowers or know what to do i would really appreciate it to help me out..