This is sort of off the thread, but because my sunroom growing area is
above an unheated garage, my floor is cold, especially when the
temperatures are below freezing. It has been my experience that orchids
in S/H really don't like having cold feet. So last winter I bought the
largest-available heated seedling mat and put it under the humidity
trays of the Phals and Catts. So I had fluorescent light above and the
heated mat below. Boy, the plants grew like crazy--especially those in
S/H. The heated seedling mats don't put out that much heat, but it's
enough.


wrote:
Reka wrote:
Ray wrote:
LED's are basically worthless if you're trying to generate heat. They are
designed to be "cold light".

I'd bet your friend has small "rope lights" on incandescent bulbs, not
LED's.

Do you know of a link to show me the difference, Ray?

Think of miniature Christmas tree lights. Those are incandescent. They
get hot because they have a white-hot tungsten filament.

Now think of the little glowing status lights on your computer. Those
are LEDs
LEDs are solid state devices. They put out very little heat. A string
of single LEDs would be useless for either light -or- heat.

J. Del Col