i have 3 plants under 3x26w, my cabinet has 2 parts so i have 1 in the top and 2 in the bottom, basically one light per plant, but they all get cycled through the bottom where theres 2, i try to make it like a sun rise sun set thing, hard to explain, anyways, this set up is doing fine for me, although when i have a bit more money im going to invest in the supplies to have 2 lights per plant, i know that will work nicely, and for a 2nd opinion, warm white for flower, cool white for veg (i just have mine mixed)