I'd pass on them. It says there 178watts but that includes the fans and also it has a extremely low Lux at 24 inches. For my 4x8 tent I went with 2 philzon CREE Cob "2000 watt" LEDs and the just covered the tent. Added a Spider Farmer SP2000 between and now it works great. When you buy lights on Amazon you really got to do your home work because a lot of them lie about the performance of there lights. They say full spectrum but they only cover reds and blues. And plants need more then that to give you a nice bushy plant that'll yield high.