let me guess, you found a deal on ebay or something because those lights are cheap as dirt. You use 1300 watts and 80,000 lumens when a 1000hps puts out nearly 110,ooo...Plus with the money that you save on buying these wack ass lack of penatration, waste of space lights, You still need to buy all the sockets, socket adpters, and wire a whole ass load of wires. It would get hot wich= more money on ventaltion. These lights do not produce enough light to penatrate a full cola or plant. Dont get me wrong, there ok in a small grow or something in that nature, but when it all boils down to it... the money you saves on bulbs, goes in to other bullshit that you need