!!update!!

My plant has hit a hard spot. Her roots reached 3 foot down in roots. The soil down there is super acidic. My girl was about two weeks into flowering. had to save as many clippings as possible for clones. I will do better next season. No pics as this is not my pc. sorry.

How do you know the roots hit 3ft down? Are you assuming they hit 3ft because they just started showing signs of pH issues? What exactly are they showing? Brown dots and yellowing on the oldest, lowest fan leaves?
Thanks, and best of luck!