Water type
Freshwater + Marine
Fits
Fluval AquaClear AC70
Part no.
19676
Replace every
2 months
Media type
Mechanical and biological
In the box
3 x Bio-Foam filter insert
Fluval AC70 Bio Foam Insert Blue 3 Pack
Traps debris and grows bacteria in one dense foam block. This is the genuine Fluval Bio-Foam insert for the AquaClear AC70 power filter, sold as a 3-pack. It is dense 30 PPI foam moulded to drop straight into the AC70's media basket, and it is not interchangeable with the AC110, AC50, AC30 or AC20 – each AquaClear size takes its own foam.
Key features
- 30 PPI dense foam – fine enough to catch suspended debris before it reaches the carbon and BIOMAX stages behind it.
- Custom-fit shape – moulded with no gaps against the basket wall, so water is pushed through the foam rather than around it.
- Doubles as biological media – once established, beneficial bacteria colonise the pore structure alongside its mechanical role.
- Three to a pack – a spare on hand while one is rinsed and dried, or a full swap in one service.
Specifications
| Manufacturer item number | 19676 |
|---|---|
| Pack size | 3 inserts |
| Material | 30 PPI dense foam |
| Water type | Freshwater and marine |
| Fits | Fluval AquaClear AC70 power filter only |
Will it fit my filter?
This foam is sized to the AC70 media basket only. It does not fit the AC110, which uses a larger foam block, or the AC20, AC30 and AC50, which each take a smaller size again.
Suitable for, and not suitable for
Suitable for the AquaClear AC70 power filter in freshwater or marine setups. Not suitable for the AC110 or any other AquaClear size – check the model printed on the filter body before ordering.
Care and maintenance
Rinse in used tank water at each service rather than tap water, to protect the bacteria colonising the foam. Replace the block roughly every 2 months, or sooner if it has compacted and no longer springs back after squeezing.
Goes well with
- AC70/AC110 Activated Carbon Insert, 3-Pack – the next filtration stage after the foam
- AC70/AC110 BIOMAX Insert, 125g – dedicated biological media for the final basket
- AC70 Filter Media Maintenance Kit – foam, carbon and BIOMAX in one box
Warranty and delivery
Supplied as genuine Fluval filter media. Your rights under the Australian Consumer Law apply in full and nothing here limits them. Ships as a standard small parcel anywhere in Australia.
Common questions
Does this foam fit the AquaClear AC110?
No. The AC110 uses a larger foam insert sized to its own media basket. This 3-pack is cut for the AC70 only.
How often should I replace the foam?
Around every 2 months under normal stocking. Rinse it in tank water between replacements rather than discarding it early.
Can I use this foam in a marine tank?
Yes. The foam itself is inert and safe for both freshwater and marine aquariums.
Should I rinse the foam in tap water?
No. Tap water chlorine kills the bacteria living in the foam. Rinse it in a bucket of removed tank water instead.




