I bought a Betta fish. I'm using my mom's vase as a tank. I put him in with 3 other regular fish. ( The cheap kind you would get at Wal-mart.) I'm currently wondering is there a specific filter and/ or heater that requires a certain tank? If so please list some brand named tanks,filters, and heaters with sites. Thank you. My screen name on AIM is King Rutecki. Thank you, and Happy Valentines Day.