As far as your pH that is really strange. You might have a calibration issue if you are using a pH pen? From looking at the leaves it looks like you are slightly overdoing it on the nitrogen. I assume your flowering stretch is over so you want to cut back on the grow and increase the bloom. Check out the GHE Flora feeding chart and give them 3/4 dose of the nutrients on their recirculating schedule. That should keep the plants pretty happy. I run the maxigro and maxibloom because they are easier, cheaper, and work just as good as the Flora. But most importantly they hold pH stable all week with no adjustments. Good luck!