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.

Aquarium filter media

Aqua One Wool 84w (25084W) for Nautilus 1100 and Nautilus 1400

25084W

Fits 2 models

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GenuineGenuine Aqua One

$6.94 each

2-pack $13.88

Aquarium Spare Parts · 8 NovLowest genuine · Aquarium Spare Parts · checked 8 Nov

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

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.

Open Aquarium Spare Parts · $6.94 each · 2-pack $13.88

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AUD, before delivery. Each price shows when it was checked.

Genuine Aqua One

1 seller

Aquarium Spare PartsGenuine · checked 8 NovGenuine part · Lowest genuinechecked 8 Nov$6.94 each2-pack $13.88OpenGo to seller

Open cheapest seller · $6.94 each · 2-pack $13.88

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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 25084W aquarium filter media

Watch the guide or follow the steps.

Aqua One Nautilus Canister Filters · Aqua One (official)

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 by25084W · 84W

Retail name:: 25084W
Retail name:: 84W

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.

Your appliance model

Fits these 2 Aqua One modelsNautilus 1100, Nautilus 1400

Aqua One2 models

Common questionsWhat does the 25084W fit? · Where can I buy the 25084W in Australia? · How do I fit the 25084W?

What does the 25084W fit?: The Aqua One Wool 84w (25084W) for Nautilus 1100 and Nautilus 1400 fits the Aqua One Nautilus 1100 and Nautilus 1400.
Where can I buy the 25084W in Australia?: We track 1 Australian seller for the 25084W; 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 25084W?: 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 25084W match? . Reports go to a person, not a bot.