Thats ok, sometimes I even disagree with myself! and I never really researched it except in the marine reef keeping area. Carbon lasts a very short time and the carbon on an air filter is literally so thin I dont see how it car be effective very long.Have to disagree with you strongly there.
Ok, so now I looked it up because I remember reading about it.
An example would be consumer reports tests shows one very expensive Lennox Carbon air filter no more effective with smoke ect than that of non carbon.
Then there is an expensive Filtrate Carbon filter that is at the bottom of the barrel with a score of 35 out of 100. Another filtrate carbon with a score of 41 and the one carbon air filter (Lennox) near the top did no better than the non carbon, it was just a good filter like the others.
SO all in all, 2 of the 3 carbon filters did far worse then many non carbon and truly were at the bottom in ratings and the one that did good, did no better than all the other good ones that were not carbon.
Just an example - (the higher rated filters score at least 4 out of 5 in everything)
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