Yes. However, your room temperature will have an affect on the stability of your temps, I suggest keeping the room around 70-75 for success with the heat rope. If you go with flexwatt you will have better results if you keep your room on the cooler side. Another thing, instead of aluminum foil, try reflectix! You can buy it by the ft at any ace hardware, it basically pushes the heat in one direction. So tape it to the back of the rack and have the heat rope or flexwatt on top of that so your tubs are taking all the heat! Good luck.