Oh looks like you've got sprouts... yes keep them under 24/0 for now. I even use 24/0 for the entire veg... you can make the plants grow faster this way and they're havn't been any reports of undue stress of hermies. Photosynthesis is the process of the plants taking in light and co2 and making food, in turn causing growth. So of course, if you constantly supply your babies with plenty of both they will thrive

Peace Again