Single leaf curled straight up spots

[Bliz]

So this poor plant has been through a lot. Basicly all my fails and every learning experience. But of all the true fails it survived. I wanna clone it and do it right this time. But i am curious whats the deal with this leaf n spots. Root rot? Anyone?

[Vaibag]

Sorry man I shouldn’t have commented. I do t know anywhere near enough to give advice.
Happy growing.

[Rwise]

No it is a root zone issue such as PH.

[SoOrbudgal]

I would be more inclined to offer advise in growing First a healthy plant. Get the right weed setup then attempt to try more advanced methods. This is a weak specimen. Get serious about really learning to grow.