Betta temp?

[Julie]

Hi, my daughters have a little fresh tank in their rooms.
The betta is in a 2.5 gallon, no filter or heater.  I'm wondering what temp you keep them at?
I was reading that it's not safe to put a heater in that small of a tank.
thanks

[beowulf]

I believe they do make tiny little heaters that look like a credit card almost for small tanks like that.  It is not needed though if the ambient temp in the room can keep the betta in the 74-76 range which they are suppose to be most happy in.

[Julie]

Thanks, he's really funny and newly acquired.  The tank has no background except the dresser mirror so he's very entertained and nice colouring too.  I think my daughter has named him rainbow....

[fishycanuck]

I've found that my bettas in unfiltered, unheated tanks lasted longer than the ones in regular tanks. Granted, there are many variables at play, but unless your house is sub-arctic, Rainbow should be just fine.