Cool.
Using soil?
Ph 6.6 is the soil ph? Not the water, feed, or runoff?
Looks nice really.
Big pot though, for the plant size. You're watering and feeding fairly frequently.
Personally id cut both down to 1-2 times per week. Dry the pot right out.
Looks a little over watered tbh.
Excess nutrient can cause red or purple stems. So can strain.
Id dry the pot right out. Just plain water for a feed or two.
Generally looking pretty good dude.