I have a question that is short and simple—Has anyone done any experiments as far as lining a grow room with mirrors to see the results that you know of, and if so, how well did it go? — Alex R.
It’s not recommended to use mirrors as reflectors in your growroom. They reflect infrared light, which is also heat and can create hot spots that will burn your plants. Some people use mylar or tin foil, but I don’t advise using them because they can provide a safe place for insects to hide and from which they can attack your plants. They can also crinkle or crease, decreasing their effectiveness. It’s much easier and better to just paint the walls of your space with flat white latex paint.