Stardawg (First Grow)

Buds looking alright. Leaves have seen better days & I feel like she's dying on me... Swapped the light because my friend who 'claims he's an expert' told me too. Flushed 20th will go for a 2-week flush even with this flawless finish. (if they make it that long) My tap water is 360ppm & runoff is 415 after flush (30+L of PH'd water) I am definitely going to do a 48-hour dark period before harvest with no watering. Anything I'm doing wrong let me know!