MIRRORS ABSORB LIGHT. This means that only a
small amount of your light is reflected back
towards your plant. What you need is something
white. White is the best colour for reflecting
light, period. Not shiny glossy white, just
plain ‘flat’ white. A white wall will reflect
more light that a mirror will. Many growers
like to paint the walls of their grow ‘flat’
white. This helps a lot. Other people like to
line their grow area with the back end of tin
foil wrapping (the white side). This is okay,
but make sure that you use the white side and
not the shiny side.
A substance which looks like a tin foil
sheet, called Mylar (Fig. 5.15), is very
popular in cannabis grow rooms. Instead of
using white walls you can use this reflective
alternative. Most DIY and hardware stores will
sell it in roles.
Figure 5.15 - Mylar comes in roles like this.
