BUDBOX PRO GT-2BudBox's unique flat white material reflects more PAR light directly to your plants, and also reflects less of the overall unused spectrum. With light energy comes heat energy and the PRO White lining will always run cooler than a standard Mylar tent. The Mylar material will reflect more heat energy, therefore, will run hotter (around 6 8C) as such, these units require greater ventilation or the use of less powerful lighting, so the environment does