Originally Posted by EKandRJ
Room temperature here is cooler than that. I have looked into small heaters, but I can't buy one now. I can't find one cheap enough, and I am unemployed.
Oh no, then that means it is way too chilly for your bettas. The water is typically a few degrees cooler than room temp, so if your room temp is like 68-70 that means the bettas water is around 65 or 66. If you don't get a heater for your betta he will get sick. I really don't know what else to tell you, except it is absolutely necessary.
Remember to always
research an animal to buy it to make sure that you have the necessary supplies.