Some yellowing is from lack of N (no worries) the weeping of the plant is a concern, but probably a combo of nute locks and root bound plants, I would have re potted before entering flowering. Flush with ph adj. water until runout is low 6s.....6.2. Check the stem to see if its red. If it is check to make sure your water softener isn't on. Get a PPM detector and get the readout from your water (personal experience). Good luck man hope everything works out well. Trust your instincts rather than listening to everyones solutions including this one. :thumbsup: