How do you keep Ultra Highlanders cool?

[RL7836]

swamp coolers work great in places with low humidity.....know of one orchid seller in the Minneapolis area that uses one and has decent success and its fairly humid there.....the drier the air the bigger temp difference can be created.....

That's also my understanding & I thought it was borderline useless in areas with high humidity. However, Michael Catalani uses one to cool his greenhouse and I believe that he's in TN - which I thought had hot humid summers ....

[rattler]

Mineapolis is fairly humid and the guy there has one that works.......like a said it works less well in humid areas but so long as its less than 95-100% it will work......just works better when its 15% humidity.....