I got 2 because they were the price of a 1000 of a few of the comparable lights of other brands. I honestly figured that they would be much worse than they are. I Allah done want one of the lights to just sit and I figured as long as they weren't to close, they wouldn't be too much. I think before I got the other one hung after I transplanted, I had the light at about 30 to maybe 34.they've seemed extremely bright since I got them. I've had gnats, I've had a cat attack, this is happening now. This is my first indoor grow. I just hope they give me something. I feel like they couldn't be any more stressed throughout their short lives as they have been. But they've never stunted and they're growing very well. Thanks for the help