The Panda Film Black & White Greenhouse Film 10' x 100' provides an effective solution for light control and surface protection in hydroponic growing environments. This durable 5.5 mil polyethylene film features a white side that reflects light to improve distribution across plant canopies and a black side that blocks light to help prevent algae growth and unwanted light exposure. Whe... https://www.hydroponicstown.com/811100-black-white-film-10-x100-5-5mil