The Planted Tank Forum - View Single Post - Fluval 406 with awful flow...
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Old 12-22-2012, 02:53 PM   #23
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In my opinion and experience, the polishing pads are the weakest link here. It doesn't take all that much to crud them up to the point of completely clogging your filter. You'd be amazed at the stuff that will clog them up that you can't even see in the water column.
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