So, the ideal temperature for betta is somewhere between 75 and 82 degrees Fahrenheit. I'm confused though. Many pet stores leave their bettas in colder temps, ...probably more around 70. Can bettas survive in 70 degree water (for extended periods of time)? I know there are SO many other factors in keeping bettas healthy and happy... but does anyone keep their bettas under that 75 degree mark? I know some people don't use heaters.. (they can be a little expensive) so I'm just wondering. I have a new betta in a small tank right now, and it's too small for a heater. I'm going to be moving her into a heated tank in the next few days. But, I'm just curious, Thanks :D