I can't say that I disagree with any of the assertions in that thread -- except that theres not a readily available assay of ALL components within Chemi-Pure. I have had good luck with it -- even if it simply becomes biological media by the time I change it out. As others have posted in the thread, the convenience is nice to me. My preferred filtrant for anything specific is Poly-Filter -- its got a long, well documented history of benefits -- but I tend to use Chemi-Pure as well. I don't really consider them along the same lines -- I see Chemi-Pure as a convenient way to polish the water, whereas Poly-Filters are known to have a wide range of adsorbant qualities.

-Justin