Either I'm not doing it right or this tent thing kind of sucks...I have 20 1070's in a 70 f^3 / 2 m^3 tent I am sucking air out of with 2 fans rated at 450 cfm (700m^c / h), and 2 more fans at 150 cfm each on the intake pumping in cold-ish air from my garage at about 70F/20C. Can't seem to get the GPUs under 150F/65C. Won't even try AC because the lowest temp I can get out of a portable 12K BTU is about 16C.

I think people who got this to work live in colder areas or made it during the winter, over here I will probably get 40C during the summer.

So you might want to reconsider if you are planning on spending $800 on a tent, vents, tubing and so on.