FitMatch

The Aqua One BettaSense takes the Aqua One Carbon Cartridge 322c (25322C) for BettaSense as its carbon filter; replace it every 2 months; Australian sellers list it from A$4.94 each as of 7 November 2026. Fitment confirmed against the manufacturer's compatibility list.

Your aquarium filter

Aquarium filter

Confirmed against Aqua One's list

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25322C

Takes the 25322C

Carbon filter · every 2 months · check the code on your old filter.

Other Aqua One aquarium filters and their replacement media

The 25322C fits the BettaSense only. These Aqua One models take a different carbon filter:

Genuine

$4.94 each

2-pack $9.88

Aquarium Spare Parts · 7 Nov

Compatible

See seller

No compatible seller tracked yet

Genuine: made by Aqua One. Compatible: another brand.

Lowest price · $4.94 each · 2-pack $9.88

Aquarium Spare Parts. Out of stock when we checked. Every seller we track is listed below. Some links earn us a commission.

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AUD, before delivery. Each price shows when it was checked.

Aquarium Spare PartsGenuine · checked 7 Nov · out of stock when checked$4.94 each2-pack $9.88Open
Open cheapest seller · $4.94 each · 2-pack $9.88

Opens Aquarium Spare Parts in a new tab. Their page is the source of truth for price, delivery and returns.

Not due yet?

Get a nudge when your carbon filter is due — it's every 2 months. One email two weeks before, no newsletter. Manage or stop it anytime.

Also saves the model to a FitMatch account under this address; the email signs you in, no password.

How to change the carbon filter in your Aqua One BettaSense

Watch the guide or follow the steps.

No clear video for this part yet. The steps cover it.

  1. 1Unplug all the aquarium's equipment, then lift off the light unit and lid and put them somewhere safe.
  2. 2Open the filter compartment and take out the sponge and the cartridges (carbon, and ceramic if your tank has one).
  3. 3Take some water out of the aquarium and rinse the sponge and cartridges in it. Aqua One says never to rinse the sponge under the tap, as that kills the beneficial bacteria. If needed, siphon waste out of the filter chambers.
  4. 4If the carbon cartridge is due for replacement (every 6 to 8 weeks, Aqua One says), throw it away and fit a new one.
  5. 5Refit everything, replace the lid and light unit, check your hands and plugs are dry, then turn the power back on and check the equipment over the next half hour.
Every number this part goes by
Retail name:
25322C
Retail name:
322C

Sellers list any of these; they are the same part.

About your BettaSense

Aqua One aquarium filter — BettaSense aquarium. Its carbon filter is the Carbon Cartridge 322c (25322C) for BettaSense, part 25322C, changed every 2 months.

Where the model number is: The model is on the filter's lid, motor head or a label on its side (Fluval 307, Eheim Classic 2215). For a tank with a built-in filter, use the tank's name.

Fits this Aqua One model

Aqua One1 model

Common questions
Which carbon filter fits the Aqua One BettaSense?
The Aqua One BettaSense takes the Aqua One Carbon Cartridge 322c (25322C) for BettaSense.
How often should I replace the carbon filter in my Aqua One BettaSense?
Every 2 months. It works less well as the filter fills up, so it's worth doing on time.
Where can I buy the 25322C in Australia?
We track 1 Australian seller for the 25322C; the lowest listed price when we last checked was A$4.94 at Aquarium Spare Parts. Prices are re-checked daily and dated on this page.
How do I fit the 25322C in an Aqua One BettaSense?
No tools, a few minutes: 5 steps, listed on this page with the replacement video where the maker has one.
What happens if I don't change it?
Spent carbon stops removing odours and discolouration, and clogged pads slow the flow, so the filter moves less water through the tank.

Something looks wrong with the BettaSense match? . Reports go to a person, not a bot.