Hi my friend,
I’m no expert by all means looks like the creepy crawlys are about. Call in the ladybirds

my friend. PH range should between 6.5 to 7.0 never that high though.
Should off feed nutes at quarter strength and worked your way up. If growing auto’s never go full dosage they don’t like a lot of nutrients.
Also my friend. You plants can recover from this, there amazing things, there basically green and mean.
Defiantly have scout around for mites.
Also when ever I enter my tent I strip down to my underwear those pesty bugs are a pain. Lol
God bless the nation we’ve the green coloured plants