Leaves burning up and yellow - Need help!

[simplegrower9]

hey guys im a new grower i got some autoflowering seeds from amsterdam but i have no idea what the strain is,
the plant is outdoor the weather here is about 30 at morning and drops to 20 at night and is 9 weeks old, used fertalizers german product but havent used it for about a month now after the leafs started showing stress if you guys could help on how to fix this would be great heres the photos... if you guys could also tell me what strain it might be id be thankful

 

[Dan Ultra]

It looks locked out to me. Might be multiple deficiencies going on or an improper pH.

How long has it been flowering?

Does that pot drain well? The soil looks thick