Need help identifying problem with plant

Plant has been developing some sort of deficiency Can anyone help me with this?
Soil, 8 weeks vegging
Thanks a lot
 

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Mcwhippin420

Well-Known Member
Yeah first pic looks like potassium but also a form of mg as it shows that outer edge similar I believe? I could be mixing up a different one so excuse me if that's the case just spit balling?
 
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