FitMatch

The Aqua One AquaLume 27 takes the Aqua One Carbon Cartridge 55c (25055C) as its carbon filter; replace it every 2 months; Australian sellers list it from A$5.94 each as of 7 November 2026. Fitment confirmed against the manufacturer's compatibility list.

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Confirmed against Aqua One's list

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25055C

Takes the 25055C

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

Other Aqua One aquarium filters that take the 25055C

Genuine

$5.94 each

2-pack $11.88

Aquarium Spare Parts · 7 Nov

Compatible

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

Lowest price · $5.94 each · 2-pack $11.88

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

Aquarium Spare PartsGenuine · checked 7 Nov$5.94 each2-pack $11.88Open
PETstockGenuine · checked 27 Oct$10.49 each2-pack $20.97Open
Open cheapest seller · $5.94 each · 2-pack $11.88

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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 AquaLume 27

Watch the guide or follow the steps.

Aqua One Clear View Hang on Filter · Aqua One (official)
  1. 1Unplug the filter, or the tank's filter pump and any other equipment in the tank, as Aqua One advises.
  2. 2Take out the carbon cartridge: remove a hang-on filter's dust cover; lift an internal filter out and pull off its casing; lift the lid and light unit off a built-in filter compartment.
  3. 3Rinse sponges gently in a bucket of water taken from the aquarium, never under the tap: Aqua One says tap water kills the filter's beneficial bacteria.
  4. 4Fit a new carbon cartridge every 6–8 weeks. Rinse new carbon first; Aqua One allows tap water for new carbon, never for sponges.
  5. 5Put the media back as it was; refill a hang-on filter with aquarium water before you switch it on. Plug the filter back in and check that water flows.
Every number this part goes by
Retail name:
25055C
Retail name:
55C

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

About your AquaLume 27

Aqua One aquarium filter — AquaLume aquarium. Its carbon filter is the Carbon Cartridge 55c (25055C), part 25055C, 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 these 15 Aqua One models
Common questions
Which carbon filter fits the Aqua One AquaLume 27?
The Aqua One AquaLume 27 takes the Aqua One Carbon Cartridge 55c (25055C).
How often should I replace the carbon filter in my Aqua One AquaLume 27?
Every 2 months. It works less well as the filter fills up, so it's worth doing on time.
Where can I buy the 25055C in Australia?
We track 2 Australian sellers for the 25055C; the lowest listed price when we last checked was A$5.94 at Aquarium Spare Parts. Prices are re-checked daily and dated on this page.
How do I fit the 25055C in an Aqua One AquaLume 27?
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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