The Planted Tank Forum - View Single Post - Using purigen in a sponge filter
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post #9 of (permalink) Old 11-06-2013, 10:45 PM
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Join Date: Dec 2010
Location: Houston, Texas
Posts: 679
Shoving anything in there will restrict your waterflow. If this is an air powered sponge filter it will likely stop your filter from working completely.
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