can anyone give me tips about what kind of fan I should use? It's in a tall DIY canopy with about 9" clearance from bulb to water..I'm interested to know what kind of movement people are running for 2x250w setups...I'm currently looking at some fans that do 120cfm 1 in 1 out..will that be enough..there are some that do 200+ cfm but I imagine they'll make my tank sound like it's lifting off?
Thanks.
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