Pest and fungus issues

Hello this is my first time ever posting here. I had ran into a problem with leaf septoria or leaf spot disease i read it's caused by a parasitic fungus and effects flowering plants. It has attacked my whitte window auto flowering plant which is in it's 4th week flower but not my pink kush phenotype which is 16 inchs under a 350w full spectrum led light in a 32 x 22 x 62 tent.

I wanted to use neem oil on my plants and wanted advice from you guys or girls on the best way to curb this pest and kill it. I can also provide pictures if you guys are more curious

I would like to see a pic.

If you have septoria, you should get it away from any other plants and get rid of any infected leaves without spreading it to other leaves.

I will show you in a few it's hard to trim it since it's an auto flower putting out outdoors is a no go since here in canada it's still a little cold

Missed the auto part, my bad.

I don't own a phone at the moment but my family members do ill give a picture when they let me use it

In the meantime, how's your temps and humidity?

I keep my temperature around 72f -76f humidity around 50%

You're sure it's septoria?

1

2

3

4

5

That looks like Ca deficiency. Can you get a whole plant pic?

Also, what type of water, ph, and what medium?

6

It’s a soil medium I don’t yet have ph testers

I use regular fresh spring water that comes from beside my house

6

My pink kush feminized

My pink kush feminized 2nd pic