A/C in the house went out and the aquarium water is getting HOT FAST! HELP!?

Today this stupid Texas weather took a tole on our A/C and it quit working. Now the upstairs in somewhere roughly around 85+, I have a 29 gallon aquarium with 2 Black Convict Cichilds. The water is reading between 82 and 81. Right now I took the light fixture off the top and have a fan blowing across the top of the water to try and cool it down. I still have the heater plugged in but it's not on in the aquarium as it has a sensor and maintains the water at 76. I had two LED pointed in the aquarium water for viewing purposes but I have since unplugged them. Is there anything else I can do to cool down the water as I do not want to lose my fish!? The A/C man is not going to be able to make it out till tomorrow morning or afternoon what should I do until then?