I keep my Bettas in 10, 15, and 20 gallon tanks and they get those big tanks all to themselves. I've always used heaters in the tanks to keep the temperature a constant 78F. I'm considering running without heaters though so I'm wondering, how many of you keep your Bettas in tanks without heaters, and what size tanks are they, and what are the lowest room temperatures you get in the winter.
Thanks in advance.
Thanks in advance.