10 weeks into my sativa grow. Strange leafs?

So I have started to see these odd leafs, they're starting to be pretty pronounced in my main cola. I know a tad hot on the nutes, what else am I doing wrong?

could just be natural die off shes getting pretty old summer turns to fall

Okay, I was still thinking I had a while until she's done..

Id check to see if I had root aphids.

Okay how do I check that?