Found the article that shows carbon to cause HLLE. Full stream carbon filtration means they are using it in a reactor. Using it in a reactor might be causing it to break down and produce dust. Some people report that they do not get HLLE when using carbon. Is it from rinsing the dust out of the carbon as dust seems to be what some people point to as a result of HLLE?

https://www.tandfonline.com/doi/full...59.2011.608608