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Old 08-24-2013, 07:25 PM   #45
Jack Gilvey
Planted Tank Obsessed
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Rather than messing about with small bits of them I wound up fitting 6 in the chamber then just filled in the gaps with some spare ehfisubstrate pro.

Less bypass overall and still exorbitant surface area for a 7 gallon tank I'd think. I just fit a 100ml Purigen on top of that as a final stage and the first (lower) chamber has some ceramic rings topped with the stock sponge for mechanical.
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