To speak intelligently about grow lights, one would have to be conversant in electromagnetic energy as well as plant physiology. Most of us, I dare say, couldn't hold our own in such a conversation. So, double check my statements with your own research. First of all, this is not a 1000 watt light. It appears to be a 40 watt light. The product description says it has 192 LED chips. The light I received has 352 LED chips. There are 16 rows of 22 LEDs in pairs arranged on a reflective surface. The product manual is lousy, as it combines information on three versions of this product. That might explain the specifications of the light being incorrect. The spectrograph of the light looks good, with peaks in the red and blue and a lesser one in the green. That's what plants need. It's hard to tell how much energy the plants will receive from the lights, because we don't get a PPFD map showing us the light intensity on a grid beneath the light at a specific distance. We do get a single value, but it is in PAR. Is that value actually in PAR, or did the manufacturer mean PPFD? Or PFD? These terms are used interchangeably, sometimes by accident, sometimes on purpose, and it leaves everyone confused. So, I will only make a few observations on the efficacy of the light: 1) This unit is good for seed starting. It will provide ample light for two to three flats of seedlings. 2) This light will not be sufficient for plants in the flowering and fruiting stages. Others at this price range are not. You could experiment and try a single dwarf tomato or small autoflowering cannabis in a grow tent. I suspect you're going to have to at least double the investment to get illumination enough for flower or fruit. 3) Leafy greens, such as lettuce and spinach, and other low light vegetables will probably do splendidly under this light.o I am pleasantly surprised at what you get for about $35.

Add chains for options on how to set up. And stop changing my delivery date.

Easy set up and definitely worth the price! I have older lights from my first grows and this light is better in a lot of ways with the easy attach and detachable driver. Very bright even on its lowest setting.