Canopy fans- blow in or blow out?
- Thread starter offroadr
- Start date
Ive read that blowing in is best because they are taking dry, non-salty air and the flow can be directed where you want it.
I don't have a fan, though that will be addressed before it warms up, but the dust and marks on my used canopy suggest that the previous owner had a roughly 3" PC fan blowing in, mounted centered on the outside rear of the canopy.
I don't have a fan, though that will be addressed before it warms up, but the dust and marks on my used canopy suggest that the previous owner had a roughly 3" PC fan blowing in, mounted centered on the outside rear of the canopy.
BeanAnimal
Premium Member
Pulling the warm moist air past PC fans will make short work of them...
Fans should push air in, preferably lower, with vents at the top that allow the warm to air assist in the flow (convection).
Fans should push air in, preferably lower, with vents at the top that allow the warm to air assist in the flow (convection).
Completely agree with BeanAnimal and this is how I've got my fans set up. I have a heat sink mounted to the top of my hood with a pc fan blowing into the fins through a hole just above it. The air exits a slit cut in the top of the hood on either side. I have another fan just behind this one, mounted the same way but with nothing but the surface of the water under it to assist in convection. Intake from both fans exit the same two slits cut in the top/sides of the hood.
Reefjunkee
Premium Member
I ran one going in and the other out to transfer heat.I also run a small fan pointed directly at the water to get en evaporative cooling effect.It can drastically cool the water especially if You are running halides.
You'll have more air flow by using them both in the same direction.
hobbby3
Reef Junkie
Can we see a picture of the slit/vents in the top of your canopy?
I currently use one fan in and one fan out method. The out fan died once already but I thought it was just because it was old to begin with.
Yep. The air will find plenty of ways out.
Assuming those fans are identical, you could remove one and I bet you shouldn't be able to tell the difference in airflow.
cordell
New member
Yeah man, the fans blowing out will rust up pretty fast. On my hood, I originally had one blowing in, the other blowing out. Well, the fan blowing out got a serious case of rust and started squealing. So I replaced them both and set them to both blow in.
But, the entire back of my canopy is wide open, so the air has plenty of space to get out from the fans. The air has to get out somewhere if they are both blowing in.
But, the entire back of my canopy is wide open, so the air has plenty of space to get out from the fans. The air has to get out somewhere if they are both blowing in.
And to go further with efficiency, hot air rises...try to exhaust your air through the top and keep intake low or away from the exhaust vents
My 40 breeder is tucked into a corner of my garage right now as I moved a couple months ago and still haven't set it back up yet. Although I do have a couple sketch-up pictures I can share that illustrate the idea.
My 40 breeder is tucked into a corner of my garage right now as I moved a couple months ago and still haven't set it back up yet. Although I do have a couple sketch-up pictures I can share that illustrate the idea.
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