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Old 01/11/2008, 11:19 AM
NanoReefWanabe NanoReefWanabe is offline
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Join Date: Oct 2006
Location: Ontario Canada
Posts: 1,121
have you pulled the impeller to see if it is damaged in anyway...it could be off balance..

is it loud vibrating noise or loud humming?

clicking, clunking, chattering would all be related to unbalanced impeller
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