I’m just gonna post these blog posts from scienceinhydroponics.com (Daniel Fernandez) related to calcium here:
- https://scienceinhydroponics.com/2021/02/understanding-calcium-deficiency-issues-in-plants.html
- https://scienceinhydroponics.com/2019/07/calciums-behavior-in-nutrient-solutions.html
- https://scienceinhydroponics.com/2020/06/using-calcium-sulfate-in-hydroponics.html
- https://scienceinhydroponics.com/2021/06/the-potassium-to-calcium-ratio-in-hydroponics.html
Daniel’s video on calmag diy is in the first post.
Interesting/funny things mentioned about “calmag” by (I think) an owner of Jack’s, or grand daughter of owner or something. I’ll post if I find it.