Thread: Powerhead MFR rating VS. Actual
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Old 07-15-2011, 03:17 PM
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Default Powerhead MFR rating VS. Actual
I thought this artical was pretty interesting. Thought I would share it. Not sure if it was posted on here or not but here it is.

http://www.advancedaquarist.com/2011...aign=clickthru
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