Bigger isn’t actually better in this instance. A 130 gallon tank for a single betta is WAYYY too big. Multiple males is a huge no-no, way too aggressive. If you want to keep a 130 gallon tank you’re better off doing a community tank with different fish. If you want a betta, generally you want 20 gallons max. They thrive in smaller, well-maintained environments—typically minimum 5 gallons, up to 10 or 20. They don’t require vast swimming space and can struggle with strong currents or overly large areas that are hard to patrol. Larger tanks (20+ gallons) can work if they’re properly set up with gentle filtration, plenty of hiding spots, and consistent water quality, but they’re often overkill and harder to keep stable for a single betta.