Fan placement and question

[Cheech]

I'm working on the plans for my canopy. The canopy will hold 2 110 VHOs, and 1 400watt MH. Should I use only one fan, or 2? At that , should I place the fan in back of the canopy, or on its side? And lastly, should I have air going into the tank, or taking the air out?

 

[OrionGirl]

There are 2 fans in the canopy for my FO that has VHO lights. There are 3 in the reef canopy with MH. 2 push air in, one pulls air out. Pulling air out is worse for the fan--more humidity to condense on the blades. Still, I think replacing a fan every 2-3 years will be better than having the tank get too hot. So, I would probably go with 2, one in each direction, and plan on replacing one every now and then. Mine are placed on the back of the canopy--on either side for the pair, with the additional one in the middle for the reef setup.

 

[Cheech]

cool, thanks orion, that's what I'll do.. By any chance, you know of good fans I should use? The ones I got now need replacement, and they are very loud. If you know of a place that sells them online, it would be great.

Thanks..

 

[OrionGirl]

There are lots of places that sell them--not sure on price, but sure for computer cooling fans--work great, and are pretty quiet. I can hear mine if I'm right next to them, but that's it.