The chosen one

OK start germanated fast and healthy but then the edge of the leaves have yellowed a bit not sure why as my soil is never to much for seedling (bio bizz all mix) I may have had the light a bit on the closer side so I've backed it off. I've grown this strain before it's a sort of half purple it's a good smoke, I didn't do amazing on the yield on the last so I'm hoping to improve that. Happy smokes