Cover walls and ceilings with reflective materials to help maximize light reflection. Also makes it a lot easier to clean the grow area as you can easily wipe the reflective sheeting down with a sponge. Black & White reflective sheeting is a very popular product and Grow It Yourself Hydroponics would recommend this product. Grow Tents are even easier then sheeting walls as you simply put the grow tent up and there you have your grow space. Grow tents help keep a perfect environment for growing because everything is concealed within in the grow tent plus they are all lined with reflective material.