Actually, it's a 2800K and a 4200K. I'm going to be purchasing a 6700K 65watt compact flourescent light for this tank shortly though. It only has 40watts total over it and I dont' think it's enough for the plants, though they don't seem to be doing too awfully bad....but I do have an aponogeten in the back left corner that doesn't look very happy.
I'm a little concerned about what'll happen to the balance when I introduce the new light. I just got this tank settled and the water is nice and clear...lol...but I do want my plants to be happy.