Quick Onde strain leaf problem

[Tuga420]

So I have this problem with my first grow.
The leafs started to have brown spots(from the bottom leafs to the top) and then they fall.
I'm new to this and there are some symptoms look alike so I'm pretty confuse.
Hoping someone can helo me

 

[Dutty Panty]

Let that soil dry out before each watering. Also no nutes yet.

 

[Tuga420]

Thank you for the help

 

[Dutty Panty]

No problem that's why I'm here. It could be other problems but that's a good starting point to get an idea