How are they going

They're actually looking pretty good for 3 weeks old, one suggestion though, next time I would turn the light off so that you actually get a better image of the plant.

Yep, looking fine. But to be picky, photos taken in normal light will allow much more detail to be seen and allowing a much better answer to be formulated. It is almost impossible to judge plant condition with photos taken under grow lights, so to make it easier for all concerned, next time you post a question regarding your plants, please provide pictures taken in normal light, not only will it allow for better answers, it will also benefit you by being provided with more specific and accurate answers. Hope this helps,......... Organoman.