Fans for your stand, In or out.

[Crumpy]

I'm not new to the hobby but, I have a stand that I built I left 2 openings on each side of the stand and I came to find it is still every humid . So I've left the door open till I figure out how to put the two fans in the stand. I can't decide if I should put both fans blowing in or one blowing in and the other blowing out . My only concern about having one blowing out is the life span of the fan from all the humidity it will be blowing out . I'm using 2 dc 3" fans . The sump is only 10 gallons.

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[BigDave]

If you're using them to pull moisture out, then I'd say blowing out.

If you were using them to cool something off then I'd say blowing in.

At the end of the day, I don't think it really matters. It's the moving of the air around that's going to be beneficial.

I used to build custom computer cases and you could start a huge fight by asking this question in one of those forums!

 

[thegrun]

You would be better off to cut another relief hole so the air can escape and leave both fans blowing inward. If you have them sucking air out they will not last long due to corrosion.

 

[xanthurum]

1 in 1 out

 

[keiferd]

I build gaming PCs and you can run a few 140mm fans half going intake and half out-take. They don't use much power and they pretty much last forever. I also use the same concept on my dart frog tank on an even smaller scale.

 

[malx]

I agree with 1 in and 1 out. I have these they are amazing. They come with all of the mounts you need to have the vent outside and fan inside. They are super quiet.

https://www.google.com/shopping/pro...m+cooling+parts&hl=en&ei=VI6qV_m6K4HmgAa6vr4o

I bought the kit which comes with two fans + mounts and vents, as well as a power supply that supports 5 fans total. I then bought an extra fan. I have 1 in on the bottom near my skimmer, and 2 out on the top by the canopy. My tank is in the wall and the air can flow from the bottom to the top.

What's nice about these is that they plug into the wall and have variable speed.

 

[A sea K]

You would be better off to cut another relief hole so the air can escape and leave both fans blowing inward. If you have them sucking air out they will not last long due to corrosion.

I have to agree with grun here, those fans won't last long at all pully moist air through them.

 

[n2585722]

I did things a little different, I have 9 fans. Two are for cooling and blow across the sump. Two are for air flow through the front electronics and one for the back cabinet electronics. These three fans blow in. I have Two fans in the back cover which has a opening into the stand where the sump is. These fans blow out. In doing this I was hoping the slight pressure differential between the electronics and the sump area would prevent vapor from getting into the electronics area. So far it has worked OK. There are two more pulling air across the lighting heat sink and out of the canopy. The two in the back cover and the two blowing across the sump are the only ones exposed to vapor from the area with water. I used fans that had a removable blade assy. I removed the blade and filled in the area with the electronics with Silicone RTV to seal it. making sure that it would not intefere with the blade movement. These have ran several months so far without issue. They were only 9 dollars each so no big deal replacing them on occasion. The tank will be operating for one year in September. There are intake vent at the bottom of the stand panels. and intake vent at the top of the canopy panels. The LED lighting is not exposed to the area of the canopy directly above the tank. There is a lid on top to access the area with the lighting. The electronics is behind the front center door ( door on left in the photo - photo taken from a side angle ) and in the back cabinet at the stand level.

 

[keiferd]

@n2585722

Did you build that stand yourself? It looks awesome.

 

[n2585722]

Yes, I did. Thanks for the compliment. I started the canopy and stand in 2008. It took a lot lomger tha I expected, but I did not get a lot of spare time to work on it. My saws and tools are in the garage? Here it Texas there are not many days of the year when you can work out in the garage. My wife had several conditions on the tank. She did not want to see anything hanging off the back of the tank and no sand against the glass or the water level at the top of the tank. This is what I came up with to meet those conditions. I also have a 110 gallon tank I want to build a stand and canopy for also, but my wife wants kitchen cabinets before I can start that project.