I remember reading about it when I was doing all that coco research when I was trying to fix that dude’s “professional” garden….Yup that’s what I thought and releases potassium when it does that. Only thing is I thought it was only calcium and magnesium it absorbed didn’t know about phosphorus but that would explain some issues I’ve had
That’s when I learned that “professional” means you get paid to do it, not that you’re good at it