it's not confusing unless you say you have a 300 watt hood with 2 of them(42's). why even bring the larger # into the mix. i know it's only 42watts but newbies are gonna be confused as shit. the fact that this thread even exists is proof that people are confused by the 2 different wattages on the box. i really don't care what you call it myself, but think of the 1st time grower with 2 42watters asking why his plants are stretching so much when he only has 3 plants under 300watts of cfl(that's 100watts a plant, right?) the reason the high number is there is to tell people which to buy to replace there incandescent light bulbs. example: my 150 watt incandescent reading light burns out, i want a cfl to replace it so i buy the 42watt because it puts out the same amount of light for reading as a 150watt incandescent.