I used a cheap Led to veg my plants and I decided to use this 600 watt Led off Amazon in a 2x4x5 tent. I was comparing the actual watt draws from the wall this one pulls about 257 watts. I did see a few grows on you tube using this light and will see what it does. The build quality is good . I have not measured the par or lumens and am only using the chart supplied by the manufacturer. I am off the belief that as long as there is enough usable light then I should be okay. Time will tell and I will update. I plant 3 gallon pot and my 1 st scrog. AND AWAY WE GROW.hahahahaha