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How do you know if your sponge filter is working?
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09-07-2006, 05:41 AM
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Ringo
I'm just a Twig
Join Date: Apr 2006
Location: The Sticks
Age: 16
Posts: 964
I have no clue, I have the same thing you have (only the triangle one) and I have that in my 10G hospital tank.
I've never really questioned whether the sponge filters actualy work, just kinda figured that they must work in there own way
Ringo
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