I see
I've got a littl tank, 12 x 8 x 8 (5 gallons ?) and i was thinking about moving my betta from my community tank to that, along with a couple of red claw crabs that i also have
I read that you don't need a heater and if not it would save me a few quid, but now I know my room temp isn't high enough, i will get a heater.