ORCA Grow Film is made from threads of a high-density reflective plastic which are bonded together to form a unique surface topography. The resulting geometry of the microfibers and the submicron pores within the microfiber create a highly reflective and diffuse surface. Its rough surface allows each individual ray of light to react with a different reflective orientation to spread the light at every concievable angle. Diffuse reflection is important to hydroponic growers because it eliminates hot spots and creates the even, efficient distribution of light plants desire. - 99% diffuse reflectance - Highest full spectrum reflectance - Keeps rooms cooler - Allows humid air out.