The Planted Tank Forum - View Single Post - Aquaclear 70 with 20 impeller, who done it?
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post #3 of (permalink) Old 12-03-2012, 05:42 AM
In.a.Box
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Join Date: Dec 2011
Location: New England
Posts: 1,116
another way is to cut one or two of the fan off the impeller to lower the flow
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