Lower leaves are turning yellow

[Taino1171]

this is a zkittlez auto flower growing in fox farm ocean forest soil and its 5 weeks old, its lower leaves are turning yellow. 2 weeks ago I gave the soil 2 tablespoons of Dr earth all purpose 444 and flower girl 394 dry amendments. When I saw the leaves turning yellow today I gave the soil 1 tablespoon of Dr earth all purpose 444 and 3 tablespoons of 394.

Does using dr earth dry amednments help remedy yellowing leaves? If not then what am I doing wrong?

 

[Groff]

Usually, this would indicate N deficiency. Although some tip necrosis might suggest early cal-mag deficiency too.

In any case, if the 95% of the girl is looking alright, don't stress too much. 5 weeks? Perfectly normal for lower branches to "complain" about nothing.
In this case, we're looking at the first set of single-fingered leaves, and first set of 3 fingered leaves. Just chop them off for better lower canopy airflow, and closely monitor new growth.

New growth and top canopy will be your true signals. Usually lower leaf yellowing (without spots) is N deficiency. In this case, even without seeing the entire plant, I would just chop them off and keep monitoring
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