What's this deficiency?

[Auto-Anto]

I've not been able to diagnose this deficiency....can anyone help ?
Is it potassium or root problem ?
Or anything else ?

 

[Yeatster]

Looks P to me man. I wouldn't worry too much, you're almost home. Other more knowledgeable peeps will help soon

 

[Waira]

-- yeah, looks mostly like P defc. to me too,.... question is what's the cause? lack-of, or an in-pot pH issue...If the latter, it has to be corrected first, or more feeds will make matters worse,... We need more info-- go here, c/p the form to here, and fill out please,... https://www.autoflower.org/threads/...ill-out-first-with-the-data-that-matta.45991/