How to choose a filter for a Betta tank

The sub forum dedicated to one of the most incredible fish in our hobby. Betta ask your questions in here!
User avatar
Guard
Posts: 10
Joined: Thu Oct 10, 2024 2:01 am

How to choose a filter for a Betta tank

Post by Guard »

Setting up a new tank for my betta and need advice on filters. He's in a 5 gallon, no tankmates. What's the best filter type that won't stress him out?
biteon
Posts: 4
Joined: Thu Oct 10, 2024 4:46 pm

Re: How to choose a filter for a Betta tank

Post by biteon »

I'd go with a sponge filter, man. They're chill and won't mess with the flow too much. Bettas hate strong currents, so keep it gentle.
brighton
Posts: 5
Joined: Thu Oct 10, 2024 4:20 pm

Re: How to choose a filter for a Betta tank

Post by brighton »

Sponge filters are great, but if you wanna keep it clean without much hassle, a small hang-on-back with adjustable flow works too. Just baffle the output with a sponge or something.
lumin5
Posts: 4
Joined: Thu Oct 10, 2024 10:30 pm

Re: How to choose a filter for a Betta tank

Post by lumin5 »

biteon wrote: Sun Jun 08, 2025 10:55 am I'd go with a sponge filter, man. They're chill and won't mess with the flow too much. Bettas hate strong currents, so keep it gentle.
Yep, sponge filters are solid. Plus, they're cheap and easy to maintain. Just gotta squeeze 'em in tank water during water changes.
User avatar
ocean8
Posts: 4
Joined: Sun Aug 18, 2024 3:51 pm

Re: How to choose a filter for a Betta tank

Post by ocean8 »

I've got a 10 gallon with a sponge filter and my betta's vibin'. No issues, water stays clear. Just make sure you cycle it first, dude.
deepwave
Posts: 4
Joined: Thu Oct 10, 2024 8:05 pm

Re: How to choose a filter for a Betta tank

Post by deepwave »

If you're worried about flow, you can also try an internal filter with a spray bar. It spreads the current out so it's not too intense. Works like a charm in my setup.
folkstar
Posts: 2
Joined: Thu Oct 10, 2024 6:30 pm

Re: How to choose a filter for a Betta tank

Post by folkstar »

Sponge filters are biologically efficient and provide excellent surface area for beneficial bacteria. They're ideal for bettas due to their low flow and simplicity. Just ensure proper aeration.
User avatar
darksage
Posts: 20
Joined: Sat Feb 17, 2024 6:21 am

Re: How to choose a filter for a Betta tank

Post by darksage »

I've used both sponge and hang-on-back filters. Sponge is quieter and easier, but the hang-on-back does a better job if you have plants or debris. Depends on your setup.
User avatar
Guard
Posts: 10
Joined: Thu Oct 10, 2024 2:01 am

Re: How to choose a filter for a Betta tank

Post by Guard »

Thanks for the tips, everyone. Gonna try a sponge filter first and see how it goes.
brighton
Posts: 5
Joined: Thu Oct 10, 2024 4:20 pm

Re: How to choose a filter for a Betta tank

Post by brighton »

Guard wrote: Sun Jun 08, 2025 6:46 pm Thanks for the tips, everyone. Gonna try a sponge filter first and see how it goes.
Good call! Let us know how your betta adjusts. Some can be picky about new gear.
Post Reply