I was gone for 8 days. I made sure before I left that there was plenty in the reservoir and it was pH down to 5.8 before I walked out the door. As to why the pH jumped, I have no idea why it does what it does. This is my tap water and it has been dechlorinated over several days it starts off as neutral 7.0. The environment is what it is, a basement cool and mostly dry. The pH tends to drift upward everyday, but usually it will settle in somewhere in the high 6s if left for an extended period. This is the first time I had seen it this high. Only thing different is the nutrients but I see this upwards drift no matter what I use.
It was the first time ever I saw the girl’s fan leaves actually pulling together so intensely that they were flipping upside down. They went from fully spread fingers to clinched together, some pointing upwards others flipping upside down in just a week. I have a timelapse camera in there and can’t wait to stitch it together and if lucky be able to see this develop.
PS
I forgot to mention that Bobbie, in her 1 gallon pot of soil, was sitting in an autopot tray, drinking the same as the other girls but was unaffected. I’m chalking this up to the buffering capabilities of soil versus coco.