Please Help:
Is this CalMag deficiency?
Age: 21 days
Transplant into this pot: 4 days ago
Watered in with 1/4 of the recommended feeding + 0.25 ml CalMag per Liter (each plant got 3 liters).
PH: checked the substrate: 6.5
watered/fed with 6.3 PH
First feed at 14 days
Open
Leaves. Color - Yellow