Congrats, you have plants.
Ya know, different strains react differently then others.
I just meant you have a lot of nutrients in your soil. A lot of people just love there plants too much and add too many nutrients. If I were growing them I would just use water until I saw the new growth yellow.
On the other hand if you want to use nutrients throughout the grow then start with a medium that has little or no nutrients like hydro. or a perlite vermiculite mix. But thats is not as easy as soil.
Your plants are small enough and healthy enough to repot them if you want. The advantage would be you could use your nutrients like every other watering. The disadvantage is you would need to keep track of it.
Hell, they look fine to me, you know the old saying; If it aint broke dont fix it.