i am thinking to buy a tower fan to increase air circulation in the tent . however ,i have already experienced high RH problems. i read in some where they blow cold steam . i wonder ionizer tower fans may cause higher humidity ? ANd do they work well ? i have 3 oscillation fans top of the canopy. but it is very hot outside and i think they may help to decrease the temp. i will put it corner of my tent if i buy one.