Yellowing leafs

[Camletzzz]

I have a little gro op with about 20 plants that I cloned and two of the plants have yellowed leaves. I'm wondering what the remedy could b for this. Thanks guys. One green thumb to another..️

 

[dbz]

I have a little gro op with about 20 plants that I cloned and two of the plants have yellowed leaves. I'm wondering what the remedy could b for this. Thanks guys. One green thumb to another..️

Pics are worth a thousand words

 

[Stoggr1]

In what stage are they?
If the lower fan leaves are yellowing it's usually nitrogen def
A pic would help