It best to use normal 5k lighting for diagnosing pictures it makes them look like they are grow lights make them look different
How often you feeding now every watering, every other? Plants look fine maybe little light in color but IMO your better off underfed then overfed but I agree with JP bloom nutrients should be used they have plenty of nitrogen in them.
Soil ph should be around 6.2-6.5 might little high but shouldn't matter that much in soil
Actually quite the opposite IMPE they get N tox easier
I have been feeding around once a week, with a lower dose. I think I should be feeding with every other watering by now? Feed...water...feed...water..