Man you earn applause for that effort.

Great job.

I am still wondering about your fan.

That type if flew hose is fine...you just need to have a really good fan to force the air out and down that tube efficiently.

The benefits are enormous and you may even be able to bring temps down another 5 degrees or so if your fan isn't quite enuff. A vortex fan would be killer right there

I know you have air coming out the other side.....how strong is the flow? Can you light a lighter right in front of it and keep it lit?

You should have a strong air blowing out...strong enuff to keep a lighter from staying lit at least a foot away.