Well some of my plants have been turning yellow I don't know if it is because they are lacking nutriens, I heard it can be from overwatering, underwatering or lack of nitrogen.
I just have some pics of the tomato seedlings but also some lettuce has been turning yellow like this tomato ones.
I touch the soil with my finger and it feels good, not to watery and not dry, so I just water when I feel that the soil is a little dry, which made me think some nutrients are missing.
Also I transplanted some cayenne peppers about a week ago but some of them just died and there are like 4 of them that survived but their leaves look a little weak, what do you think it's happening, by the way I have some basil in te same pot and basil is doing great.
Here is a pic of the pepper seedlings.
And here are the tomato plants that are turning yellow.