Aquarium Filter Sponge – Thick Biochemical Foam Pad
Thick aquarium filter sponge in 2cm and 2.5cm, cut to common tank sizes. Biochemical foam that gives bacteria somewhere to colonise.
Price range: $14.00 through $21.00
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Aquarium Filter Sponge – Thick Biochemical Foam Pad
A filter needs surface area more than it needs machinery, and that is what this aquarium filter sponge provides. The open foam structure gives nitrifying bacteria somewhere to live, so waste is broken down biologically rather than only being trapped. It is supplied in 2cm and 2.5cm thicknesses and cut to common tank sizes, so you can replace a worn pad rather than buying a new filter.
Why pet owners choose it
- ✔ 2cm and 2.5cm thickness — match your existing pad
- ✔ Biochemical foam — surface area for bacteria to colonise
- ✔ Common tank sizes — 30x50cm, 50x60cm and 30x25cm
- ✔ Replaceable — cheaper than a new filter
- ✔ White or black — black hides staining better
At a glance
| Thickness | 2cm and 2.5cm |
| Sizes | 30x50cm, 50x60cm, 30x25cm |
| Colour | White or black |
| Use | Biological filtration media |
| Cleaning | Rinse in tank water, never tap water |
Is it right for your filter?
Measure the pad you are replacing before ordering, including its thickness — a 2cm pad in a 2.5cm slot will not seal, and a too-thick one will not seat. This aquarium filter sponge is a cut-to-size pad rather than a moulded part, so it suits filters that take flat media. If your filter needs a specific moulded shape, a dedicated replacement is the better choice.
Care
Rinse the sponge in water taken out of the tank during a water change, never under the tap — tap water kills the bacteria the foam is there to hold, which is the single most common way people crash a filter. Squeeze gently rather than scrubbing. Replace the sponge only when it is falling apart; a brown sponge is working, not dirty.
What’s in the box
1 x aquarium filter sponge in your chosen size and thickness.
Looking after your filtration? Browse our aquarium filter accessories, or see the aquarium sponge filter for a complete unit.
For advice on aquarium filtration, see the PetMD fish care advice.
| Weight | 21 lbs |
|---|---|
| Dimensions | 13 in |
| Color | White, black |
| Size for white sponge | 30cmx50cmx2.5cm/30x50x2cm/50x60x2cm |
| Size for black blue sponge | 30x25x2cm |
| Thickness | 2.5cm, 2cm |
| Choice | yes |
Frequently Asked Questions
Measure the pad you are replacing, including thickness. A 2cm pad in a 2.5cm slot will not seal properly.
Rinse it in water taken from the tank during a water change. Tap water kills the bacteria the foam holds, which can crash your filter.
No, that is normal and it means the sponge is working. Only replace it when it is physically falling apart.
Both filter the same. Black shows less staining over time, which is purely cosmetic.
Rarely. A sponge can last months or longer. Replacing it too often throws away your bacteria colony.
It suits filters that take flat cut-to-size media. If yours needs a moulded shape, buy the dedicated replacement instead.
✔ Heavy glazed ceramic
✔ Non-slip, tip-resistant base
✔ Seven colours available
✔ Does not absorb odours
✔ Rinse-clean surface
• Press the bowl into the bedding so it sits level
• Rinse and refill daily
• Wash with warm soapy water every few days
• Avoid abrasive scourers on the glaze
• Check the rim for chips and replace if cracked
Aquarium Filter Sponge – Thick Biochemical Foam Pad
A filter needs surface area more than it needs machinery, and that is what this aquarium filter sponge provides. The open foam structure gives nitrifying bacteria somewhere to live, so waste is broken down biologically rather than only being trapped. It is supplied in 2cm and 2.5cm thicknesses and cut to common tank sizes, so you can replace a worn pad rather than buying a new filter.
Why pet owners choose it
- ✔ 2cm and 2.5cm thickness — match your existing pad
- ✔ Biochemical foam — surface area for bacteria to colonise
- ✔ Common tank sizes — 30x50cm, 50x60cm and 30x25cm
- ✔ Replaceable — cheaper than a new filter
- ✔ White or black — black hides staining better
At a glance
| Thickness | 2cm and 2.5cm |
| Sizes | 30x50cm, 50x60cm, 30x25cm |
| Colour | White or black |
| Use | Biological filtration media |
| Cleaning | Rinse in tank water, never tap water |
Is it right for your filter?
Measure the pad you are replacing before ordering, including its thickness — a 2cm pad in a 2.5cm slot will not seal, and a too-thick one will not seat. This aquarium filter sponge is a cut-to-size pad rather than a moulded part, so it suits filters that take flat media. If your filter needs a specific moulded shape, a dedicated replacement is the better choice.
Care
Rinse the sponge in water taken out of the tank during a water change, never under the tap — tap water kills the bacteria the foam is there to hold, which is the single most common way people crash a filter. Squeeze gently rather than scrubbing. Replace the sponge only when it is falling apart; a brown sponge is working, not dirty.
What’s in the box
1 x aquarium filter sponge in your chosen size and thickness.
Looking after your filtration? Browse our aquarium filter accessories, or see the aquarium sponge filter for a complete unit.
For advice on aquarium filtration, see the PetMD fish care advice.
| Weight | 21 lbs |
|---|---|
| Dimensions | 13 in |
| Color | White, black |
| Size for white sponge | 30cmx50cmx2.5cm/30x50x2cm/50x60x2cm |
| Size for black blue sponge | 30x25x2cm |
| Thickness | 2.5cm, 2cm |
| Choice | yes |
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