The best way to measure a light reflector is by its uniformity. Simply put, how well does it create an evenly distributed light footprint. What you don't want is a reflector that creates any hot points, because it may force you to hang your light further than you’d like, reducing to total output of your lights. One way to solve hot spot problems is to use dimpled reflector surfaces, which are built to diffuse light so the photons are approaching your plants from more angles than they would if you used a polished surface reflector.​JUMP TO REFLECTORS