Brown spots on stems and some leafs..

[22222]

Hello, everybody. I'm searching the whole internet to find somebody with similar problem but I can't.. nobody really know what this is. Only guesses. So maybe I can find somebody here.


Ok, so it's indoor, hum is not higher than 40%.

Here are the photos.

 

[AngryBird]

Hi and welcome to 420mag..I will call in some outdoor growers.
How close to harvest is she?
Have you seen any pests?
Have you fed any nutes ( the tip)