Aquarium filter media
Aqua One Sponge 102s (25102S) for Xpression Nano 17, Xpression Nano 21 and Xpression Nano 27
25102S
Fits 3 models
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GenuineGenuine Aqua One
$5.00
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 · $5.00
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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 25102S aquarium filter media
Watch the guide or follow the steps.
No clear video for this part yet. The steps cover it.
- 1Unplug all the aquarium's equipment, then lift off the light unit and lid and put them somewhere safe.
- 2Open the filter compartment and take out the sponge and the cartridges (carbon, and ceramic if your tank has one).
- 3Take some water out of the aquarium and rinse the sponge and cartridges in it. Aqua One says never to rinse the sponge under the tap, as that kills the beneficial bacteria. If needed, siphon waste out of the filter chambers.
- 4Put the sponge back, or fit a new one once the old one blocks up or breaks down.
- 5Refit everything, replace the lid and light unit, check your hands and plugs are dry, then turn the power back on and check the equipment over the next half hour.
Every number this part goes by
- Retail name:
- 102S
- Retail name:
- 25102S
Sellers list any of these; they are the same part.
Will it fit your appliance?
Type your model number and we'll check it against the makers' lists.
Fits these 3 Aqua One models
Aqua One3 models
Common questions
- What does the 25102S fit?
- The Aqua One Sponge 102s (25102S) for Xpression Nano 17, Xpression Nano 21 and Xpression Nano 27 fits the Aqua One Xpression Nano 17, Xpression Nano 21 and Xpression Nano 27.
- Where can I buy the 25102S in Australia?
- We track 1 Australian seller for the 25102S; the lowest listed price when we last checked was A$5.00 at Aquarium Spare Parts. Prices are re-checked daily and dated on this page.
- How do I fit the 25102S?
- 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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