Great tips guys. THe cooler with ice is a great idea. If possible get as much tubing as you can and coil it up and maybe secure with zip-ties or rope. The longer the tube, the more time the
hot tank water has to come in contact with the cooler water. Also, look at a low flow pump. If you have a harbor freight around you can get a small pump for about 10 bucks or so. The slower the flow, the more time there is to pull the heat out of the water.
Fans work great. I have a hood with vents, but when it gets
hot, I open the doors and blow a fan across. My temp dropped about 2 degrees in under an hour.