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Old 03-31-2008, 09:22 PM   #5
emc7
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Join Date: Jul 2005
Location: Johns Creek, GA
Posts: 3,302
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If you have an air pump, you can get a sponge filter. It won't be all that effective at first (about as good as an air stone), but after it gets established, it will make a good back-up filter.
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