The Aqua One Filter Air 136 takes the Aqua One Sponge 66s (25066S) for Filter Air 136 as its filter media; Australian sellers list it from A$13.88 as of 29 October 2026. Fitment confirmed against the manufacturer's compatibility list.
Your aquarium filter
Aqua One Filter Air 136
Aquarium filter
Confirmed against Aqua One's listConfirmed against Aqua One's own compatibility list
Not yours? Change
Takes the 25066S filter media
Sponge 66s (25066S) for Filter Air 136 · 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 25066S
Filter media · check the code on your old filter.
Other Aqua One aquarium filters and their replacement media
The 25066S fits the Filter Air 136 only. These Aqua One models take a different filter media:
GenuineGenuine Aqua One
$13.88
Aquarium Spare Parts · 29 OctLowest genuine · Aquarium Spare Parts · checked 29 Oct
CompatibleCompatible option
See seller
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 · $13.88
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AUD, before delivery. Each price shows when it was checked.
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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 Filter Air 136
Watch the guide or follow the steps.
No clear video for this part yet. The steps cover it.
- 1Turn off the air pump (or water pump) that drives the sponge filter.
- 2Lift the sponge filter out of the aquarium and pull the sponge off its base.
- 3Squeeze the sponge out in a bucket of aquarium water, not tap water.
- 4Fit the sponge back (or a new one if it has broken down) and return the filter to the tank.
Every number this part goes by
- Retail name:
- 25066S
- Retail name:
- 66S
Sellers list any of these; they are the same part.
About your Aqua One Filter Air 136
Aqua One aquarium filter — Filter Air sponge filter. Its filter media is the Sponge 66s (25066S) for Filter Air 136, part 25066S.
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 Filter Air 136?
- The Aqua One Filter Air 136 takes the Aqua One Sponge 66s (25066S) for Filter Air 136.
- Where can I buy the 25066S in Australia?
- We track 1 Australian seller for the 25066S; the lowest listed price when we last checked was A$13.88 at Aquarium Spare Parts. Prices are re-checked daily and dated on this page.
- How do I fit the 25066S in an Aqua One Filter Air 136?
- No tools, a few minutes: 4 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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