Aquarium filter media
Aqua One Wool 143w (25143W) for Ocellaris 400
25143W
Fits 1 model
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GenuineGenuine Aqua One
$6.94 each
2-pack $13.88
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 · $6.94 each · 2-pack $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 regularly, Aqua One says, or once it starts to break down and no longer cleans up.
How to change the 25143W aquarium filter media
Watch the guide or follow the steps.
No clear video for this part yet. The steps cover it.
- 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.
- 4Fit a new wool pad: Aqua One says to replace the wool regularly, or when it starts to break down and can no longer be cleaned properly.
- 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:
- 143W
- Retail name:
- 25143W
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 25143W fit?
- The Aqua One Wool 143w (25143W) for Ocellaris 400 fits the Aqua One Ocellaris 400.
- Where can I buy the 25143W in Australia?
- We track 1 Australian seller for the 25143W; the lowest listed price when we last checked was A$6.94 at Aquarium Spare Parts. Prices are re-checked daily and dated on this page.
- How do I fit the 25143W?
- 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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