Yeah man, i agree with metalbrad. that is a big light for some clones, a t-5 should do, and it will use a fraction of the power. And the full spectrum is better for veg.
But anyways, what i always do with my clones and the first couple weeks of veg, is i foliar feed them every 2nd or 3rd day. The clones don't have many roots, so they can't take up as much nutrients or water, where as foliar feeding they can absorb whatever you give them. I foliar feed with something that is going to be high in cal-mag, because it will make those clones more strong and overall healthier. You can make up your own mixture, or just pick up some supernatural greenstay, which is a foliar feed, that is super high in cal-mag and nitrogen. Works fucking wonders for me.