My horses have already had three generations of offspring and live miles from my ranch, do you have any advice for getting them back into my barn?

Just stop fertilizing. I would only do flushing with hydroponics if I had been going heavy on the feed. I always back off N right before flower, and taper it down to just P. The last couple weeks I give just plain pH’d water. I live in a legal state so I can experiment a bit after my jars are full. The 3 plants I have hanging now went to almost 90 days. It’s really strain dependent.

The kind of growth I’m referring to is looking green and happy. Towards harvest it should start to cannibalize it’s lower leaves and fade.

Is the plant fading at all? How do the trichs look? The trichs (not on the leaves) should go from clear to cloudy. If the soil is still feeding it (especially N) it will continue to grow.