FitMatch

The Aqua One Splish & Splash L 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 29 October 2026. Fitment confirmed against the manufacturer's compatibility list.

Aqua One Splish & Splash L

Your aquarium filter

Aquarium filter

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 · 29 Oct

Compatible

See seller

No compatible seller tracked yet

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

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

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 29 Oct$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 Splish & Splash L

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 Splish & Splash L

Aqua One aquarium filter — Splish & Splash 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 Splish & Splash L?
The Aqua One Splish & Splash L takes the Aqua One Carbon Cartridge 55c (25055C).
How often should I replace the carbon filter in my Aqua One Splish & Splash L?
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 Splish & Splash L?
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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