FitMatch
Aqua One Carbon Cartridge 124c (25124C) for Reflex 13

Aquarium filter media

Aqua One Carbon Cartridge 124c (25124C) for Reflex 13

25124C

Fits 1 model · replace every 2 months

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Genuine

$7.88

Aquarium Spare Parts · 30 Oct

Compatible

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No compatible seller tracked yet

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

Lowest price · $7.88

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

Aquarium Spare PartsGenuine · checked 30 Oct$7.88Open
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Not due yet?

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

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How to change the 25124C aquarium filter media

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:
124C
Retail name:
25124C

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

Will it fit your appliance?

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Fits this Aqua One model

Aqua One1 model

Common questions
What does the 25124C fit?
The Aqua One Carbon Cartridge 124c (25124C) for Reflex 13 fits the Aqua One Reflex 13.
How often should I replace the 25124C?
Every 2 months. It works less well as the filter fills up, so it's worth doing on time.
Where can I buy the 25124C in Australia?
We track 1 Australian seller for the 25124C; the lowest listed price when we last checked was A$7.88 at Aquarium Spare Parts. Prices are re-checked daily and dated on this page.
How do I fit the 25124C?
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.

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