Serper Active Member Dec 25, 2008 #1 whats the silver thing on the walls on most small grow spaces? whats it made of?
G gangjababy Well-Known Member Dec 25, 2008 #2 it's called mylar, you can also use emergency blankets, they are made of mylar
Serper Active Member Dec 25, 2008 #4 are they the same thing as insulators from the roof as heat deflectors?
