FitMatch

The Aqua One Aspect 36 takes the Aqua One Carbon Cartridge 1c (25001C) as its carbon filter; replace it every 2 months; Australian sellers list it from A$9.44 each as of 29 October 2026. Fitment confirmed against the manufacturer's compatibility list.

Your aquarium filter

Aquarium filter

Confirmed against Aqua One's list

Not yours? ChangeSave it · remind me
25001C

Takes the 25001C

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

Other Aqua One aquarium filters that take the 25001C

Genuine

$9.44 each

2-pack $18.88

Aquarium Spare Parts · 29 Oct

Compatible

See seller

No compatible seller tracked yet

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

Lowest price · $9.44 each · 2-pack $18.88

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

Open Aquarium Spare Parts

Compare 2 sellers

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

Aquarium Spare PartsGenuine · checked 29 Oct$9.44 each2-pack $18.88Open
PETstockGenuine · checked 27 Oct · out of stock when checked$10.99 each2-pack $21.97Open
Open cheapest seller · $9.44 each · 2-pack $18.88

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 Aspect 36

Watch the guide or follow the steps.

AquaBac Internal Filters · 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: lift an internal filter out and pull off its casing; lift a top filter's lid and spray bar; 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. Plug the filter back in and check that water flows.
Every number this part goes by
Retail name:
1C
Retail name:
25001C

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

About your Aspect 36

Aqua One aquarium filter — Aspect aquarium. Its carbon filter is the Carbon Cartridge 1c (25001C), part 25001C, 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 34 Aqua One models

AquaStart 320. Aqua One lists carbon cartridge 1c (25001C) for the discontinued AquaStart 320/320T and 55c (25055C) for the AquaStart 320: check the cartridge in your filter.

Common questions
Which carbon filter fits the Aqua One Aspect 36?
The Aqua One Aspect 36 takes the Aqua One Carbon Cartridge 1c (25001C).
How often should I replace the carbon filter in my Aqua One Aspect 36?
Every 2 months. It works less well as the filter fills up, so it's worth doing on time.
Where can I buy the 25001C in Australia?
We track 2 Australian sellers for the 25001C; the lowest listed price when we last checked was A$9.44 at Aquarium Spare Parts. Prices are re-checked daily and dated on this page.
How do I fit the 25001C in an Aqua One Aspect 36?
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 Aspect 36 match? . Reports go to a person, not a bot.