First time growing - brown line and spot on the leaf

Hi everyone, this is my first time growing or reaching this far when growing marijuana so far all the leaf looking good but these two at the end seems to be having an issue as you can see in the pictures there are rusty brown lines on the leaf? can anyone tell what that is? or how can i prevent it is it something to worry?


thanks in advance

Looks like a leaf miner.

Notice the trail it leaves on the leaf.

how can i treat it?

Research cannabis friendly pesticide for leaf miners. I've never personally had them on a grow. I couldn't tell you what works or don't.

Azamax by General Hydroponics might work. It jacks up the most common bug infestations. Like knats. But for Miners? I don't know.