These plants are not getting taller because the light is so close. Back the light off another 2 feet and relax a bit. Just let them be.
So Back the light off 2 feet, you want the light 30" from your plants. Don't change the power setting. They will grow up to it.
Do this for me.
Soak each pot with Rain water. Give each pot one liter of rain water if you can collect it. Slowly dribble One or 2 cups every 5 min until each has been given 1 L. Giving them a little at a time like this gives the soil time to soak up the water your putting in the pot, it's not run down the inside of the pot and out the bottom hole.
Then do nothing. They look good color wise. No deficiency.
Don't worry about over watering. Just do nothing but check on them once a day for 10 days. Check on them once a day. Stick your finger in the pot and see how they feel daily so you always know where they are at. Let the soil dry out. It's going to take a few days. When the top of soil is getting dry and dusty. Stick your finger in deep.
You want it to feel quite dry an inch down before you water again. There will still be enough moisture down deep in the pot to sustain her.
Weight some more. When the top of soil is dry and dusty. Every day Stick your finger in deep. One day you will feel it's time to water.
This time mix your nutrients 1/4 strength on the label. Water as you did last time. Do the dribble method. 1 L each a little at a time so the soil has time to soak up the water. Then do nothing again for 10 days. Check on them once a day. Stick your finger in the pot and see how they feel daily so you always know where they are at. If they need water at 8 days do the dribble method at 8 days. 1 L as before.
Watch them for color. If you see any yellowing of lower leaves, feed them next watering. 1/4 strength on the bottle no more than that in pots this size.
If the plants are a nice dark green and growing do not feed them. Just dribble method water this time. Check on them once a day. Stick your finger in the pot and see how they feel daily so you always know where they are at.
Do this and your plants will take right off and grow. In 2 or 3 weeks your plants will look a lot better. They will stretch out and you can start low stress training them.
It would not hurt to pick up some
cal-Mag. Your going to need a little. If you have it already give them 1/4 teaspoon in your 1/4 strength feeding solution no more than once a month until you flip them. They will need more then.
Move the little side light up beside the LED if you want it on. Just light the canopy.
