im not 100% sure about the soil ph, my setup makes collecting runoff tough, but i've been phing the water between 6.2 and 6.8. i'm actually leaning towards a bit of nitrogen overdose. i will perhaps give it another watering of pure water next time and the following feed pure flower nutes, no veg mixed in.
i was using around half strength foxfarm nutes. i used 2/3 flowering nutes, 1/3 veg nutes the previous feeding, followed now by pure water. i will wait and see how the new growth looks and feed accordingly.