The Planted Tank Forum - View Single Post - Silica substrate
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post #8 of (permalink) Old 03-22-2013, 04:49 PM
Planted Tank Guru
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Join Date: Jul 2010
Location: British Columbia, Canada
Posts: 3,182
Keep in mind that the Purigen particles should not be packed into the bag in a too thick layer - water must be able to flow well right through it for it to have optimum effectiveness. I feel it shouldn't be more than about 1/2" thick.
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