Ensuring adequate lighting is one of the most important conditions for a healthy and productive garden. While grow lights are a necessity, they are expensive and can create heat. Mylar and other types of reflective sheeting are an ideal way to increase the lighting potential in indoor gardens. This thin film will reflect 98% of the light around the room, and is easy to install by either tacking or taping to the walls. Installing mylar sheeting possibly one of the easiest and least expensive ways to increase light coverage.