How should I warm my axie's water?

[Ludghens]

It's been about a month since I adopted my axolotl and so far temperature hasn't been an issue, but these areas during autumn and winter have weather going nuts and ranging from 18°C (64°F) to 10°C (50°F), the lowest being 1°C (33°F) last year.

I have tried looking for other threads but I just find how to cool their tank, not keep it at the proper range in case it's too cold.

Any ideas or suggestions? Thanks in advance.

 

[michael]

I wouldn't worry with down to 50F. For anything lower I would consider an aquarium heater. I've kept them down to about 35F. At real cold temps they slow down a lot and don't eat much.