Help! Rust Spots

[AO grown]

I have no idea what the problem is rust spots started from bottom leafs worked it way up to top leafs. what ima I missing! help
what can I do to save this plant

Sent from my SAMSUNG-SM-G930A using 420 Magazine Mobile App

 

[EricGreenery]

When did you last feed nutes and at what strength? What medium are you using? What was last PH run off?


There's a question/answer sticky, use that, post back here and people will be able to better help.

My first impression would be nute burn.