Bettas are great pets and can live in a bowl with no fillter,heater,or light but I think your tank for the betta should have a fillter,but if you want a heater put one,but you don't need one.I have had 6 bettas and
ALL of them lived to be over 5 years old one live almost 10 years old.

So if you want to know more about them just ask me.
