Wicked Pissah #2

Not much improvement from changing PH. I've now tried increasing and decreasing nutrients, and raising and lowering PH. My feed PH and runoff is consistently in the 6.2 to 6.6 range. No clue what else to do. Maybe I'm watering to much at a time? To often? I wait until the pot is light and the soil is dry up to first knuckle. I feel like I'm doing ever recommended but not seeing results. This late in the game I'm just gonna ride it out. Got a week or two left on everything except the Fog