Nitrogen Deficiency?

The bottom leaves on my two plants have been turning yellow and falling off. It doesn't make much sense to me as they are in fox farm soil mixed with vermiculite and perlite. Is it even possible for them to be deficient in anything? It may be important to add that it is in kentucky with high humidity and temperatures. I don't know whether that could be part of the issue. If it is suffering from nitrogen deficiency a recommendation for a fertilizer to fix the issue would be appreciated. A general fertilizer for flowering would also be helpful. I don't have much access to stores other than home depot or lowes so keep that in mind. (pictures below)

N cal mag right away. Check for bugs also

Looks more like calcuim issues. The first looks burnt nukes maybe. No expert but those spots can be anything

mine looked a bit like that and i upped the cal mag and maxsea to twice a week and they have taken off and the new growth looks nice again,like ^^ said it's hard to tell from a picture.

eddy600 said:

mine looked a bit like that and i upped the cal mag and maxsea to twice a week and they have taken off and the new growth looks nice again,like ^^ said it's hard to tell from a picture.

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any fertilizer you'd recommend for that?

I've ran into mag def with ffof soil ....I'd start there before you do anything IMHO .....good luck

Indacouch said:

I've ran into mag def with ffof soil ....I'd start there before you do anything IMHO .....good luck

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Indeed ...FF lacks cal mag. N, cal, mag acts like a domino effect when one is absent

dubbledeforty said:

any fertilizer you'd recommend for that?

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I use a tablespoon of maxsea 16 16 16 for veg and their bloom formula after hearing about it on here along with a short teaspoon of cal mag once or twice a week depending on how much they are drinking,this is a bit less than the directions call for.