Quote Originally Posted by smoknjoe
Do some research BigBlock.
I have done plenty of research and I know more about lighting and electrical than 99% of the people on this board.

Quote Originally Posted by smoknjoe
LEDs have an extremely lightweight and compact design. This fact along with low heat emissions make LED's a very attractive light source.
You clearly need to do some more research. LEDs are not light when you add up the hundreds of them and the power supply you need for growing. Weight is irrelivant anyway, it's not like you carry your grow around with you. LEDs put out MORE heat than fluorescent or HID. It's a matter of efficiency. For a given wattage, lights put out a certain amount of heat and a certain amount of light. If a light gives off more lumens there is less heat. If a light gives off less lumens there is more heat. It's basic physics. LEDs put off less light for a given wattage than HID or fluorescents, thus, they give off more heat. The only type of lighting that gives off more heat than LEDs are incandescents, and we all know how worthless those are for growing.

If CFLs cost $100 each for 20 watt bulbs would you use them? Of course not. LEDs make even less sense than that. LEDs are gaining efficiency every year and one day they might be a viable option...for now they have a LONG way to go before they make any sense what so ever.