Do Bettas need a filter

[Olive]

I dunno, man. My dude's been chillin' in a 3 gallon no filter for months. Just do water changes like every 4 days, use Stress Coat. He's vibin'.

It's great your fish is doing well, but not all bettas are so resilient. Filters are a safety net, especially for beginners.

[Luminous]

Exactly. Consistency is key. A filter helps maintain stable params, which is crucial for long-term health. Even if your current routine works, a filter reduces risk.