The next generation of grow film is here. ORCA Grow Film's nano structure provides a unique combination of high reflectivity and true diffuse reflection. A reflective combination that is extremely powerful - rendering PET and other grow films obsolete. Not only does it give you more usuable light than other reflective films - it is tough and strong. It is 100% light tight and gives 99% diffuse reflection with up to 50% more lux.