I was going to move my betta to his new 10 gallon tank today when I noticed the water was freezing! My heater randomly broke and I’ve only had it for one month! It’s very annoying because I leave for vacation soon and I don’t want to leave when he’s just gotten in his new tank incase there are any issues and by the time I order a new heater on Amazon or go out and buy one I won’t have time to transfer Lucky to his tank (I want to observe and make sure everything is good for a week). Anyway does anyone have any good (non breakable) betta heater suggestions for a 10 gallon? Would it be better to go with two smaller heaters incase one fails or would that overheat the tank? Thanks!!