Shhhhh....too many people think the condensation on the tubs is bad!Let them..I think that it's a simulation of the rain season and as long as the substrate is dry it's not a problem.
BTW..I don't cool. I have the PERFECT facility (my basement) The end tub temps are cooler there when the seasons change, but the hot spot stays the same. The humidity is great in MD anyway.
I use back heat so as not to have to worry about a "glitch" frying my eggs.