Hey, buddy! 👋
Your girl looks great, you fixed the blockage situation just in time! Your bloom additive is just what you need for flowering! If you can, get yourself an additive for the end of flowering, for ripening the harvest...often this additive is called Ripen, and you need to add it in the last two weeks of flowering before the flush week! For watering, just adding Ripen will be enough, no other additives needed! 👌
To lower and control the pH of the solution in watering, I recommend using high-concentration phosphoric acid as pH DOWN. It helps cannabis during flowering like nothing else, and you only need a tiny amount for the right effect. If you have a pH meter, you can easily figure out through trial and error how much you need to add! I have this acid from Growth Technology, and it's 81% concentration. For 10 liters, 2 drops are enough to drop the acidity from 7.7 pH to 5.7 pH, in my case. 👌
Good luck, buddy! ✊😇