I bought a Honeywell 3 speed fan the other day to test out how low I can get the water temperature before I make the decision to get an axolotl. It has brought the tank down from 72 to 66 degrees and occasionally raises up to 67 degrees. The fan I bought can't be angled downward so right now it is pointed face down on top of a screen lid. Are there any fans that can be angled across the water and can cool better than 66 degrees?