Aquarium filter media
Aqua One Sponge Phosphate 191s (25191S) for IFX 100
25191S
Fits 1 model
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GenuineGenuine Aqua One
$17.88
Aquarium Spare Parts · 7 NovLowest genuine · Aquarium Spare Parts · checked 7 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 · $17.88
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AUD, before delivery. Each price shows when it was checked.
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How long it lasts
Replace it as the filter's manual says; Aqua One gives no set interval for this part.
How to change the 25191S aquarium filter media
Watch the guide or follow the steps.
- 1Unplug the filter and any other equipment in the tank, as Aqua One advises and lift it out of the tank.
- 2Pull the filter casing off the motor and take out the sponge, and the carbon cartridge or pouch if your filter has one.
- 3Rinse the sponge gently in a bucket of water taken from the aquarium to flush out solid waste, then throw that water away. Aqua One says never to rinse it under the tap: chlorine kills the filter's bacteria.
- 4Fit the phosphate sponge where the old sponge sat.
- 5Put the media back in the casing, refit it to the motor, put the filter back in the tank and plug it in. Check that water flows.
Every number this part goes by
- Retail name:
- 191S
- Retail name:
- 25191S
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
Phosphate-removing sponge set Aqua One lists for this filter; use it in place of a standard sponge if you need it.
Common questions
- What does the 25191S fit?
- The Aqua One Sponge Phosphate 191s (25191S) for IFX 100 fits the Aqua One IFX 100.
- Where can I buy the 25191S in Australia?
- We track 1 Australian seller for the 25191S; the lowest listed price when we last checked was A$17.88 at Aquarium Spare Parts. Prices are re-checked daily and dated on this page.
- How do I fit the 25191S?
- 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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