It kinda is. I never used to heat my betta tanks when I was younger because my mom refused to admit they needed one. My fishies would live for a good 2 or 3 years before they died so I just went with it. Patrick was in that specific cage for 5 months unheated. Most of those in our old house, which had really sucky heating. He's obviously happier now
i am UBER excited, i got a TWENTY GALLON TANK....... and thats not the best part, the best part is it was FREE, i sadly have a 15 gallon filter and heater in it, working on that issue, but its actually pretty warm, i think the heater is alright, and the filter is in the middle of the tank to get most of the tanks water, and i got a new betta.... i need to make a divider and buy a hood for it though, but the canvas i bought isnt large enough in width, so im gonna need to get more and some more binder things for the edges, so i DO plan on divideing it or makeing it a community tank. my new betta is solid maroon. i naamed him nemo.