FitMatch
Aqua One Carbon Cartridge 3c (25003C) for AquaStyle 620 and AquaStyle 620T

Aquarium filter media

Aqua One Carbon Cartridge 3c (25003C) for AquaStyle 620 and AquaStyle 620T

25003C

Fits 2 models · replace every 2 months

Wrong part, or your model missing? Tell us. A person checks every report.

Genuine

$11.94 each

2-pack $23.88

Aquarium Spare Parts · 29 Oct

Compatible

See seller

No compatible seller tracked yet

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

Lowest price · $11.94 each · 2-pack $23.88

Aquarium Spare Parts. Out of stock when we checked. Every seller we track is listed below. Some links earn us a commission.

Open Aquarium Spare Parts

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

Aquarium Spare PartsGenuine · checked 29 Oct · out of stock when checked$11.94 each2-pack $23.88Open
PETstockGenuine · checked 27 Oct · out of stock when checked$18.62 each2-pack $37.23Open
Open cheapest seller · $11.94 each · 2-pack $23.88

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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 25003C aquarium filter media

Watch the guide or follow the steps.

No clear video for this part yet. The steps cover it.

  1. 1Turn the power head off and unplug the aquarium's equipment.
  2. 2Remove the lid from the filter unit and lift the elbow and spray bar off the top of the power head.
  3. 3Take out the carbon cartridge and the black filter sponge. Rinse the sponge in a little aquarium water in a bucket, then throw that water away rather than adding it back to the tank.
  4. 4Fit a new carbon cartridge every 6–8 weeks, rinsed thoroughly under the tap first, then put the sponge back. On Lifestyle tanks the cartridge sits on top of the black sponge, wool facing up.
  5. 5Refit the spray bar with its holes pointing down onto the carbon cartridge, make sure the tank is full, turn the power head on and check that water flows from the spray bar. Close the lid.
Every number this part goes by
Retail name:
25003C
Retail name:
3C

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

Will it fit your appliance?

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Fits these 2 Aqua One models
Common questions
What does the 25003C fit?
The Aqua One Carbon Cartridge 3c (25003C) for AquaStyle 620 and AquaStyle 620T fits the Aqua One AquaStyle 620 and AquaStyle 620T.
How often should I replace the 25003C?
Every 2 months. It works less well as the filter fills up, so it's worth doing on time.
Where can I buy the 25003C in Australia?
We track 2 Australian sellers for the 25003C; the lowest listed price when we last checked was A$11.94 at Aquarium Spare Parts. Prices are re-checked daily and dated on this page.
How do I fit the 25003C?
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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