I need help plz master kush auto

Hi can u advise me plz I'm new to this master kush auto in soil had lst 23 days from seed bottom fan leaves turning yellow can you help plz

Break up whatever soil that is before feeding it. Are you checking pH?

hotrodharley said:

Break up whatever soil that is before feeding it. Are you checking pH?

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no i havent will that do that to my plant