Hey Northern_Loki , I will keep that in mind. I have many recent studies from 2018 to 2022 that would do well as individual threads in that category. Once I have a little free time, I could add some threads. And maybe do a Zotero dump to share all the studies and white papers I have on these topics (many hundreds).
I also found the pH work interesting. A few considerations for low pH nutrient solutions include:
- Macros and micros that have increased or reduced uptake at lower pH, including those which can easily cause phytotoxicity, including Cu, Zn, Mn, and B.
- The effect pH plays on various chelators and their chelation strength.
- For rockwool users, Grodan warns that pH below 5.0 may degrade the rockwool fibers.
I run rockwool at pH 5.25 to help keep silicon in the orthosilicic acid form and help prevent Pythium spp. but I also run about 1:15 NH4+:NO3- to ensure the soilless solution pH does not drift below pH 5.0. I’m about to have a group call with the eastern US rep for Grodan and a Grodan Technical Advisor, and I plan to ask about running pH below 5.0
You may enjoy these studies if you haven’t seen them before. And I promise this is the last off-topic post I will make in this thread 