Aquarium filter media
Aqua One Sponge 15ppi 405s (25405S) for Nautilus 2700UV
25405S
Fits 1 model
Wrong part, or your model missing? Tell us. A person checks every report.
GenuineGenuine Aqua One
$19.44 each
2-pack $38.88
Aquarium Spare Parts · 30 OctLowest genuine · Aquarium Spare Parts · checked 30 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 · $19.44 each · 2-pack $38.88
Aquarium Spare Parts. Every seller we track is listed below. Some links earn us a commission. Some seller links earn us a commission, at no extra cost to you.
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 25405S aquarium filter media
Watch the guide or follow the steps.
- 1Turn the canister filter off at the power point and unplug it. Close the taps or flow valve and disconnect the tap connector from the head unit (Nautilus: lift the locking lever).
- 2Fill a bucket with water from your aquarium. Release the clips, lift off the head unit and take the media baskets out of the canister.
- 3Take out the sponges and the white wool. Dunk the baskets of biological media a few times in the bucket of aquarium water: Aqua One says this keeps the chlorine in tap water from killing the good bacteria on it.
- 4Rinse the sponges in the bucket of aquarium water. Fit a new sponge once the old one clogs and water no longer passes through it easily.
- 5Put the media back in the same baskets and order, refit the baskets and head unit, then prime and restart the filter as its manual describes.
Every number this part goes by
- Retail name:
- 25405S
- Retail name:
- 405S
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 this Aqua One model
Aqua One1 model
Common questions
- What does the 25405S fit?
- The Aqua One Sponge 15ppi 405s (25405S) for Nautilus 2700UV fits the Aqua One Nautilus 2700UV.
- Where can I buy the 25405S in Australia?
- We track 1 Australian seller for the 25405S; the lowest listed price when we last checked was A$19.44 at Aquarium Spare Parts. Prices are re-checked daily and dated on this page.
- How do I fit the 25405S?
- 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 25405S match? . Reports go to a person, not a bot.