I havn't seen any LEDS really impress me, i used to run them, Specturm King is the only LED i seen that actually preforms well. A respected grower did a test grow and pulled 1lb from a 450 watt LED (actual power from the wall).
http://spectrumkingled.com/ there website if you want to check them out.
U have been on here for few years and you have never seen Tangs grows?
