almost 3 weeks under the led, a few weeks under a 400 and the rest under a 600.... She surprised me with the height and weight she put on when I got her under the HPS. It was almost immediate... I could see the changes the day after I switched her...
And yes, they stayed close, I would estimate a week or so behind, but the plants were beautiful. Lush, great color, big leaves, tight lines and they just seemed to be the healthiest veg plants I have grown... Flowering is a whole different story though...
I really do believe that we will be using LED's in the very near future, we just are not there yet...