Yeah, the pH thing is a pain. OTOH, fighting with plants for several weeks, doing flushes and all the other shit I have done to try to fix stuff in other media is worse for me. I am getting quicker with the pHing, and once I am on to auto fertigation, it will be less often because I will be using a ~60 liter reservoir. It will be interesting to see how the bigger pots do with this setup. I am just getting the auto irrigation sorted. For now, it
looks like I should be able to run both the solos and the larger pots on the same reservoir and pump.
I also really appreciate the tolerance of coco to heavy watering. In my experience, once plants are well established, it is bloody hard to overwater. I think that the risk of underwatering to insufficient runoff is a higher risk, maybe a lot higher, especially with solos. I checked the pump timing spreadsheet I used last winter, and I was fertigating the solos six times a day for a while. I had to back off to fewer due to overflow on one of the solo pots, but they were all doing really well on six fertigations per day until I ran into the overflow issue. Once those solos get really plugged with roots, the water soaks in really slowly, so the size of headroom above the medium becomes an issue.
All a learning experience for this grower. As usual.