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Unread 05-24-2004, 11:10 PM   #163
kusojiji
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Join Date: Nov 2003
Location: Japan
Posts: 86
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Pull the impeller out and check to see if the blade assy is loose from the magnet. If it shakes, even just a little bit, it will make noise. Glue it to the magnet and see if that makes a difference. I forget if the hydors had this problem or not. The Dolphins and another brand name definitely did.
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