Fan Placement on Canopy

[villious]

Hi all. Below are two designs for fan placement on a T5 hood. Which option would give better cooling?

 

[96p993]

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

 

[JPReef]

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.

 

[Muleball39]

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.

 

[sjm817]

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.

 

[villious]

So your saying use "positive pressure" by forcing air into the canopy and let it exit through the vents?

 

[sjm817]

Yes. You want outside air moving through the fans, not canopy air.

 

[Mr_Harry]

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

 

[villious]

Roger that. I'm with ya! Thank you