01-26-2010, 12:37 AM
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Great! BTW, why, in particular, will your friend find this info useful? I am always interested in seeing how people use my research.
Well, as the article stated, the amount of media circulation definitely proved important for Eheim filters--could not account for them without addressing media. As such, I believe that both are major factors in filtration, but many filters are limited with regard to the amount of media time/media flow that they can accommodate. This deficiency means that in most cases the flow rate will take precedence. Of course, canister filters and trickle filters are the major exception.
Personally, I tend to favor flow rate to media in my own aquariums as I tend to use the aquarium itself as the medium--lots of porous decor and lots of plants. Thus, flow rate becomes more functional. At the same time, I know several people that put a lot more trust in the capacity of their medium, though I have never seen significant evidence that supports all of their claims.