Hi Everyone! I hope this is in the right place! I was bouncing around the idea of getting an axolotol for my 20 gallon aquarium. I have an unheated goldfish tank and I know that it's usually around 74 °f for reference. Would one of those fans you buy on Amazon be enough to keep it safe, or would it still be too hot? I know chillers are much more expensive and am not really hoping to get one at the moment. If the tank is to warm for axolotols, what other suggestions do you guys have? Are there any amphibians or freshwater crabs that can be kept with fish in a 20 gallon? Thanks!