Haha....Ken's articles have a tendancy to do just that. Extremely scientific but somewhat confusing. The general conclusion of that article is using a high grade carbon and changing it often will result in lower DOC
Carbon has a very minor effect on dropping the TDS
in water simply because the pore size is too large to catch most of the dissolved solids. This is why a RO
membrane is so effective in reaching a 0 TDS
state. It's small pore size catches virtually all the dissolved solids.
And back to why I am trying bio pellets instead of carbon. There is always more than 1 way to accomplish something. We are trying to get lower TOC's (total organic carbons) in our tanks. GAC
is 1 way, as proved in that article. Carbon dosing (running bio pellets) is another. If you want a little more head spinning, read this....
Feature Article: Bacterial Counts in Reef Aquarium Water: Baseline Values and Modulation by Carbon Dosing, Protein Skimming, and Granular Activated Carbon Filtration — Advanced Aquarist's Online Magazine
"The bottom line with respect to the carbon dosing hypothesis is clear; the basic tenets of this theory appear to hold up to experimental scrutiny; carbon dosing does increase water column bacteria populations, and skimming does remove some bacteria with their attendant nutrient loads. Thus, the underlying science behind this approach to nutrient export appears valid."