LEDs work, but people aren't doing homework.

LEDs give a lot less room for error if you are building your own system. You have to get the right nm wavelengths that HID lighting does automatically, but inefficiently. LEDs are better then HIDs on paper, and can work very well if you do it right.
neceros Reviewed by neceros on . LED or NOT has anyone try to flower with led? talking about the 90 watt high power UFO led. they are saying that it is as good as the 400 watt hps and produce they same yield. I just want to know about them and wonder their just crap compared to the hps Rating: 5