Any ideas?

[Blueguy]

Hello, this is my first auto flower grow and these are getting pretty close to being ready. I’m wondering if any has an idea about the yellowing and dying leaves? The ph in my well water was a little alkaline (a bit over an 8). I brought it down to about 6.7 yesterday when I watered. They were fed compost tea 4 days ago and the ph was a bit over 7. They’re being grown in well composted manure. Thanks!!

[ductwizard2]

Pics are too fuzzy to tell how close to harvest you are. PH you know is high but could just be the plant burning up the leaves to feed the buds, what color are the trichs?

[Blueguy]

The trichomes are a mix of milky white and glassy looking.