yes an old phone charger or something to that effect will work. PC fans are 12V DC so just look on whatever you are going to use and it will tell you the output power. Black is ground, red or yellow is hot. I have done this many times and is perfectly safe.
Baka123 Reviewed by Baka123 on . Computer fan ventilation So I am building a 150 watt HPS grow box out of a huge cardboard box, the inside of which I have painted white. I'm only looking to grow 2-3 plants so the space seems perfect (~2x2). My question is about making efficient ventilation. I was going to build a PVC tube to run just above the light with holes drilled to suck the heat out. Obviously the one end would be sealed with the other end containing some kind of fan, with a mesh covered hole at the bottom of the box just at stem/root Rating: 5