FitMatch

The Aqua One Horizon 182 takes the Aqua One Carbon Cartridge 57c (25057C) for ClearView 600 and Horizon 182 as its carbon filter; replace it every 2 months; Australian sellers list it from A$8.94 each as of 7 November 2026. Fitment confirmed against the manufacturer's compatibility list.

Aqua One Horizon 182

Your aquarium filter

Aquarium filter

Confirmed against Aqua One's list

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25057C

Takes the 25057C

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

Other Aqua One aquarium filters that take the 25057C

Genuine

$8.94 each

2-pack $17.88

Aquarium Spare Parts · 7 Nov

Compatible

See seller

No compatible seller tracked yet

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

Lowest price · $8.94 each · 2-pack $17.88

Aquarium Spare Parts. Every seller we track is listed below. Some links earn us a commission.

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Compare 2 sellers

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

Aquarium Spare PartsGenuine · checked 7 Nov$8.94 each2-pack $17.88Open
PETstockGenuine · checked 27 Oct · out of stock when checked$16.49 each2-pack $32.97Open
Open cheapest seller · $8.94 each · 2-pack $17.88

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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.

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How to change the carbon filter in your Aqua One Horizon 182

Watch the guide or follow the steps.

Aqua One Clear View Hang on Filter · Aqua One (official)
  1. 1Unplug the filter at the power supply and lift it off the back of the aquarium.
  2. 2Remove the dust cover (lid), drain the water left in the filter body over a sink or bucket, and take out the carbon cartridge and the sponge.
  3. 3Rinse the sponge gently in a bucket of aquarium water, only to remove solid waste: Aqua One says never to rinse it with tap water. Shake the carbon cartridge in the same water to flush out waste.
  4. 4Fit a new carbon cartridge every 6–8 weeks. On the ClearView 100 and 280 it slides into the furthest grooves with the wool facing the back of the filter; the sponge sits between it and the front.
  5. 5Hang the filter back on the aquarium, fill the filter body with aquarium water until it overflows back into the tank, replace the dust cover and turn it on.
Every number this part goes by
Retail name:
25057C
Retail name:
57C

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

About your Horizon 182

Aqua One aquarium filter — Horizon aquarium. Its carbon filter is the Carbon Cartridge 57c (25057C) for ClearView 600 and Horizon 182, part 25057C, 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 2 Aqua One models

Aqua One2 models

Common questions
Which carbon filter fits the Aqua One Horizon 182?
The Aqua One Horizon 182 takes the Aqua One Carbon Cartridge 57c (25057C) for ClearView 600 and Horizon 182.
How often should I replace the carbon filter in my Aqua One Horizon 182?
Every 2 months. It works less well as the filter fills up, so it's worth doing on time.
Where can I buy the 25057C in Australia?
We track 2 Australian sellers for the 25057C; the lowest listed price when we last checked was A$8.94 at Aquarium Spare Parts. Prices are re-checked daily and dated on this page.
How do I fit the 25057C in an Aqua One Horizon 182?
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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