Gorilla Glue Auto FastBuds (1st Grow)

On 5/6 I noticed that the new leaf growth on the main cola started to show signs of brown and bronze spots along with some lower leaves exposed to direct light. I decided to check the runoff PH and PPM of the soil with a TDS tester. The runoff PPM was a whopping 3000+ PPM and the soil ph was acidic (Also the last feeding I added nutes to the soil without letting it runoff, that might have had a hand in this). I don't think I've watered till runoff before and this could have been the issue. I flushed with distilled water until the PPM got to around 1000 and the PH was 6.5ish. Since then it does not seem like new brown and bronze spots have formed on any new leaves and I will probably not be adding anymore nutes into the soil for the rest of the grow. I trimmed off the browned leaves but left a few spots to monitor if it spreads.