Amazing! The light is spectacularly bright! Have it hanging in a 5x5 gorilla, and the ladies love it! The dimmer dials from off with a click, to 100% brightness with ease. I have it l plugged into a timer, and it has no problem. My circulation fans have had no problem taking care of the minimal heat emitting from this baby. (can touch the aluminum with bare hands).

I have no comment on the energy efficiency this light may have, but I can say it's an excellent quality light, that has matched some of my California lights, at half the cost.  

In 5 years of trying all the mid-high level Led grow lights...This light by far exceeded my expectations, I have not changed anything but the light and each of the plants increased 37% yield...This company's products are the real deal.

Supreme new LED lights are a great addition to my garden. Great lights for the money. Great packaging, fast shipping, and incredibly easy to set up. Pretty much hang it, turn it on and adjust the intensity with the dimmer. Heat seems to dissipate quickly. Great job, as usual, Looking forward to checking out the controller and daisy chain features!