Cool it down....

<a href=showthread.php?s=&postid=6846345#post6846345 target=_blank>Originally posted</a> by DiViNeLeFT
schristi69... if you dont believe me look at any CPU on a computer... the fan on the heatsink always pulls air away from the CPU, it doesnt blow air onto it.

The use of the word "always" is a little too strong for this statement I believe. Some fans are inward pointed to move air from higher in the case down through the heatsink fins versus pulling warmer air radiating off the MB up through the HS.

Some setups utilize a "cyclone" type setup attaching two inward blowing fans on either side of the HS which collide and carry the heat up and away from the fins through the top of the HS.

Sorry to hijack the thread onto an IT topic, but I wanted to point that out. Not wanting to be argumentative. ;)

As far as moving air through the canopy, I would think the more important aspect would be the volume of air being processed rather than the direction it is processed in. My only sticking point on the matter would be that the air needs to be exhausted upwards in a fashion that leads to minimal contact time of the heated air to the surface of the water. Whether venting in and blowing out, or blowing in and venting out - so long as the heated air is moving UP and AWAY then all should be well.

Ventilation is so cheap and easy to work with that you can experiment with several setups to judge which works best for you. No point in starting an enflamed debate about the subject. If you wish to do so then produce some data on testing that you have done so that we may follow along with your argument.

:thumbsup:

Happy Reefing everyone!
 
take the fans out of the hood for the nano, when my friend upgrades his 12 g to halides im gonna help him take out the moonlights and pc bulb and fans, then i might help him make a hood, one fan blows in at the lever of the water, the other vents out about the halide... hot air rises
 
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