The Aqua One NanoFlow 220 takes the Aqua One Sponge 133s (25133S) for NanoFlow 220 as its filter media; Australian sellers list it from A$7.88 as of 30 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your aquarium filter
Aqua One NanoFlow 220
Aquarium filter
Confirmed against Aqua One's listConfirmed against Aqua One's own compatibility list
Not yours? Change
Takes the 25133S filter media
Sponge 133s (25133S) for NanoFlow 220 · check the code printed on your old filter before ordering.
Your aquarium filter
Aquarium filter
Confirmed against Aqua One's listConfirmed against Aqua One's own compatibility list
Takes the 25133S
Filter media · check the code on your old filter.
Other Aqua One aquarium filters and their replacement media
The 25133S fits the NanoFlow 220 only. These Aqua One models take a different filter media:
GenuineGenuine Aqua One
$7.88
Aquarium Spare Parts · 30 OctLowest genuine · Aquarium Spare Parts · checked 30 Oct
CompatibleCompatible option
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No compatible seller tracked yetNo compatible seller tracked yet
Genuine: made by Aqua One. Compatible: another brand.Genuine is made by Aqua One. Compatible is made by another brand. Check the seller's page for the size and models it fits.
Lowest price · $7.88
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This aquarium filter also takes a carbon filter
- Aqua One Carbon Pouch 133c (25133C) for NanoFlow 220Open Aquarium Spare Parts$6.88
Separate from the filter media. Reduces dissolved waste, odours and discolouration (activated carbon). Replace every 2 months.
Compare 1 seller
AUD, before delivery. Each price shows when it was checked.
Opens Aquarium Spare Parts in a new tab. Their page is the source of truth for price, delivery and returns.
How long it lasts
Replace it when it clogs, breaks down or no longer holds its shape, Aqua One says; until then rinse it in a bucket of aquarium water each time you clean the filter.
How to change the filter media in your Aqua One NanoFlow 220
Watch the guide or follow the steps.
- 1Unplug the filter and any other equipment in the tank, as Aqua One advises and lift it out of the tank.
- 2Pull the filter casing off the motor and take out the sponge, and the carbon cartridge or pouch if your filter has one.
- 3Rinse the sponge gently in a bucket of water taken from the aquarium to flush out solid waste, then throw that water away. Aqua One says never to rinse it under the tap: chlorine kills the filter's bacteria.
- 4Put the sponge back, or fit a new one once the old one blocks up or breaks down.
- 5Put the media back in the casing, refit it to the motor, put the filter back in the tank and plug it in. Check that water flows.
Every number this part goes by
- Retail name:
- 133S
- Retail name:
- 25133S
Sellers list any of these; they are the same part.
About your Aqua One NanoFlow 220
Aqua One aquarium filter — NanoFlow internal filter. Its filter media is the Sponge 133s (25133S) for NanoFlow 220, part 25133S.
Also in this aquarium filter: Aqua One Carbon Pouch 133c (25133C) for NanoFlow 220 (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 this Aqua One model
Aqua One1 model
Common questions
- Which filter media fits the Aqua One NanoFlow 220?
- The Aqua One NanoFlow 220 takes the Aqua One Sponge 133s (25133S) for NanoFlow 220.
- Where can I buy the 25133S in Australia?
- We track 1 Australian seller for the 25133S; the lowest listed price when we last checked was A$7.88 at Aquarium Spare Parts. Prices are re-checked daily and dated on this page.
- How do I fit the 25133S in an Aqua One NanoFlow 220?
- 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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