Flora Hydroponics Panda Film 10 X 100 Feet
This waterproof poly film is black on the outside and white on the inside. The black backing and white surface work together to reflect 90% of the light striking it and send light back to the growing area. The waterproof, light-proof film also helps prevent algae and mold growth on walls. Double it up by putting the black surfaces together to economically and effectively partition off indoor gardens.