Slow growth of one plant out of three AK-47s

Hey buddy :-) it can also be simply genetic. Carry on looking great 👍

Hello, I think it's a magnesium deficiency MAGNESIUM Without this immobile micronutrient, photosynthesis wouldn't be possible. This mineral is at the heart of the chlorophyll molecule and allows it to absorb light. A magnesium deficiency will give a ragged appearance to the lower growths. The leaves will yellow, dry out, and eventually turn brown. Prevention • Include dolomitic lime in your growing substrate • Use compost rich in manure • Maintain a good pH balance. Solutions • Rinse your substrate with water at a pH of 6.0 if it's inadequate. • Epsom salts are a source of magnesium. Add 1–2 teaspoons of Epsom salts to about 4 liters of water and apply until symptoms resolve.