Well, one week, and the results are in so far, I'm still impressed. And you can tell by the photos. the first was taken 5 days before they went under the T5, and the second is after one week. I like it. The growth is dense and the small grow tips that you can't see are breaking out all over the place. There will be no need to it. I'm most impressed with the shorter on and how its filling out. :thumbsup: