To Bob,
I have LED grow light, but they are really expensive. So I added some fluorescent grow light from Walmart. Unfortuantely, they only have 4 in stock and can't order online. So I added whatever light I have, such as CFL, floor lamp, even a bug zapper. Even they are not energy efficient as LED, the waste energy becomes heat. When the baby tree grow bigger, I will add more lights which will generate more heat. I am thinking to increase the temperature, but the grow room is 9'W x 15'L x 7'H. My wife think I've been too extreme. I don't want to surprise her with the electric bill. Besides, lower temp minimize the fungus.