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04/20/2009, 09:15 AM
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#1 |
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Registered Member
Join Date: Apr 2001
Location: Newport News, Virginia
Posts: 347
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Fan Placement on Canopy
Hi all. Below are two designs for fan placement on a T5 hood. Which option would give better cooling?
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"Good? Bad? I'm the one with the gun." "Hail to the king, baby!" -Ashley J. 'Ash' Williams This board has taught me that common sense is not so common..... Current Tank Info: 120 SPS Dominate |
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04/20/2009, 10:58 AM
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#2 |
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Registered Member
Join Date: Oct 2004
Location: Mckinney, Tx
Posts: 1,130
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The hot spot on T5 bulbs has been said to be where the writing is on the bulb...keep that in mind when designing your flow
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04/20/2009, 11:00 AM
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#3 |
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Registered Member
Join Date: Aug 2007
Location: Bucyrus, Ohio
Posts: 245
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I would put 1 120mm fan on each side both blowing in and a vent hole in the middle on top. I wouldnt want salty air blowing across electronic fans as it would increase the degredation rate of the motors and/or bearings depending on what fans you end up getting.
P.S. - If you have a normal 120 and not a tall 120 i would suggest maybe 2 120mm fans on both sides. If your only running T5's and not Halides just the 1 on each side should be fine for cooling. |
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04/20/2009, 01:16 PM
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#4 |
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Registered Member
Join Date: Jul 2005
Location: Springfield, Missouri
Posts: 137
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you don't want your fans sucking air from inside the tank, it will kill the fans in short order. I would do as JPReef says with the fans blowing in with vent holes in the top or back or both.
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When lying on your death bed, will you be more upset with the things that you did or the things you didn't do? Current Tank Info: 90 gal. two 250w MH, two 110w VHO, 40gal. sump |
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04/20/2009, 01:22 PM
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#5 |
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On Yer left!
 
Join Date: Sep 2004
Location: Northern VA
Posts: 18,777
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I have my fans blowing in from the back. I dont want the fans visible. The outflow vents are in the top/front of the canopy.
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- Scott |
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04/20/2009, 04:21 PM
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#6 |
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Registered Member
Join Date: Apr 2001
Location: Newport News, Virginia
Posts: 347
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So your saying use "positive pressure" by forcing air into the canopy and let it exit through the vents?
__________________
"Good? Bad? I'm the one with the gun." "Hail to the king, baby!" -Ashley J. 'Ash' Williams This board has taught me that common sense is not so common..... Current Tank Info: 120 SPS Dominate |
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04/20/2009, 04:33 PM
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#7 |
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On Yer left!
Join Date: Sep 2004
Location: Northern VA
Posts: 18,777
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Yes. You want outside air moving through the fans, not canopy air.
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- Scott |
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04/20/2009, 05:01 PM
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#8 |
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Moved On
Join Date: Apr 2009
Location: Clay, NY
Posts: 65
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Cold air in on the label end of the bulb (cold spot) out on the other end
bulbs should be at 95 F for max output |
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04/20/2009, 06:17 PM
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#9 |
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Registered Member
Join Date: Apr 2001
Location: Newport News, Virginia
Posts: 347
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Roger that. I'm with ya! Thank you
__________________
"Good? Bad? I'm the one with the gun." "Hail to the king, baby!" -Ashley J. 'Ash' Williams This board has taught me that common sense is not so common..... Current Tank Info: 120 SPS Dominate |
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