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Cooling Fan (1 Viewer)

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I was just wondering if anyone knows a place online that sells cheap fans for cooling a canopy? I guess just normal computer fans are what everone uses to cool their canopy?
 

AggieBrandon

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I got a pack of 10 4" fans on ebay for 10 bucks with a few dollars shipping. When you buy fans make sure you purchase fans that have a good CFM (air flow) rating and a low db level (noise level).

Brandon
 
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that have a good CFM (air flow) rating and a low db level (noise level).

estimates on 'good'? what sort of numbers should we be looking for (I realize it is dependant on tank size, but is there some sort of formula?)
 
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