The Planted Tank Forum - View Single Post - The best bio filter media....um...ever
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post #19 of (permalink) Old 03-24-2013, 05:47 PM
rowdaddy
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Join Date: Jan 2012
Location: Upstate, SC
Posts: 153
Re: The best bio filter media....um...ever

How does the 8x8x4 have the same surface area as the 8x8x1? I would think out would have at least twice the surface area. What gives? Lol

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