evaporative cooling and plentiful air

My gobies stop spawning when it gets hot out.  My basement stays at 78 at the hottest part of the summer.  Right now, the room temp is 75.  My gobies are at 73F, however.  How did I achieve this? Chiller? Fans? no!!!
 
Now that I have whole fish room air, via a linear piston pump, I just directed one of the air feeds to the surface of my well covered tank of brood stock gobies (and removed the heater of course).  Brought it down 2 degrees without any additional equipment, electrical use, or equipment expense! Evaporative cooling is a thing! It works!
 
Its so nice to have more air than I need.

check out Kathy's Clowns, llc website:
http://kathysclowns.com
Captive bred clownfish and more
(Wholesale to the trade.)

I think you meant "without"...

http://www.fishtalpropagations.com/#!home/mainPage
"Making captive breeding easier."

Indeed, thanks, I corrected it.

check out Kathy's Clowns, llc website:
http://kathysclowns.com
Captive bred clownfish and more
(Wholesale to the trade.)

Way to innovate Kathy. I guess anything to purge the humid air above the surface would work. Will you add a second line as the temp gets higher this summer?