I agree with
@Michka, if the solution is at 6, she will recover just fine. One more thing, in about 3 of your photos, the tips of your leaves have browned. I think your nute levels might be a little high. In the past for me, just adding more water helped lower the PPM. Those tips will never go back to fully green, but they won't get worse and all your new leaves will look great. The plant will be fine.