Okay maybe looking for a better way to set up my Fans. Your thoughts on the subject would be great 
I have 2 Vivosun 6" isolating fans
Vivosun carbon filter and fan
4" auxiliary fan at bottom of tent w/4" ductwork
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The fan on the bottom is on the right side now not the left 
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I’m just switching them to flower today
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Personally, but I’m a newbie at this, I would put the 4 inch fan and duct over the lights to exhaust the heat of the tent… but I may be wrong. That’s the way I set mine up…
Cool air at bottom and big exhaust fan and filter at top right
More interested in the placement of the small Fans thanks