Healthy plants but those internodes are really long. You might want to use more light/longer hours, 18/6 if possible. What kind of lighting are you using? I'm sure the nutrients are fine because the plant is nice looking, it's just that issue with the internode spacing. Why shorter internodes? because shorter internodes gives you tighter buds. Spacey internodes will give you more popcorn like buds that are separated and if they are not properly lit then they will suffer in quality as well but otherwise it's coming along just fine.
If possible, look into LST so that you can get light into the hard to reach areas. There's an abundance of info on this site on LST. I would also try to super crop the tops and work your way down and SC every other node below, every week to other week (to keep the plant from growing upwards and concentrate on lateral branching instead). Just my 2 cents but my method is not mandatory. Good luck!
P.S. What strain are they?