Yellow spot

The soil is FFOF/perlite mixed at a three to two ratio respectively. Plant is about 4 weeks old. No nutes added yet. This spot showed up in a matter of hours




Is this yellow leaf spot? Nitrogen deficiency? How should I treat? Thanks guys

One little spot doesn't have to mean anything and certainly does not mean nitrogen deficiency.

need to start feeding 1/4 strength at a month old . & like bug said 1 spot does not set off any alarms look under the leaves for any bugs or what not , its a prevent measure . good luck .