No, these are seedlings.
Your plants, appear to be doing very well, and I would consider flipping these within the next 2-3 weeks. Will you flower in this same tent? Will you be re-potting these plants again?
As long as you are in veg, keep the lights at 18/6, keep the humidity somewhere near 50% with lots of ventilation and try to keep the temp between about 70 and about 85 F.
Are all the branches still symmetrical?
Just in case, be sure to remove and clean the pH meter. This will extend its life considerably.