Im guessing you're looking at home depot? Just asking cus I got the exact light there
Anyway, yes they are fucking awesome lights and WILL grow a plant. I just cut down my first plant last night, was a OG kush from clone. I used 1 68w 2700k, 1 42w 2700k, 2 13w 6500k and 1 23w. heres a pic
Remember, the more lights you get, the bigger and faster your plants will grow. Make sure to get at least 2 or 3 42w's if you really want to start off a good first grow
I would recommend getting at LEAST 80w-100w's per plant. I have 2 plants in my box with ~120w and my white widow is 2x bigger than the one I just cut down, if I had it all by itself it wouldve been a lil monster