Water type
Freshwater + Marine
Fits
Fluval 106, Fluval 206, Fluval 107, Fluval 207
Part no.
A236
Replace every
6 months
Fluval Bio Foam 106 206 107 207
Genuine Fluval Bio-Foam+ that filters twice — trapping fine debris while giving bacteria somewhere to live. This 3-pack of foam inserts is sized for the Fluval 106, 206, 107 and 207 canister filters, doing mechanical and biological filtration in the one pad.
Key features
- Dual-purpose foam — a large porous surface supports colonies of beneficial nitrifying bacteria, while the foam structure also catches fine particles the first filtration stage misses.
- Genuine Fluval part — manufacturer part A236, sized to drop straight into your 106, 206, 107 or 207 canister.
- Sold as a 3-pack — replace inserts in rotation rather than all at once, so you never strip out your whole bacterial colony in one service.
- Fresh and saltwater safe.
Will it fit my filter?
Yes, if you run a Fluval 106, 206, 107 or 207 canister filter. This is the correct Bio-Foam+ insert (part A236) for all four of those models.
Specifications
| Manufacturer part number | Fluval A236 |
|---|---|
| Fits | Fluval 106, 206, 107, 207 canister filters |
| Function | Mechanical and biological filtration |
| Water type | Freshwater and marine |
| Pack quantity | 3 foam inserts |
What's included
Three Bio-Foam+ inserts. The canister filter and other media stages are sold separately.
Suitable for, and not suitable for
Suitable for the Fluval 106, 206, 107 and 207 canister filters in fresh or saltwater. Not sized for the larger 306/406 or 307/407 canisters — check your model before ordering.
Care and maintenance
Fluval recommends rinsing this foam in old tank water roughly every 3 months and replacing it around every 6 months. Because it's sold as a 3-pack, you can stagger replacement — swap one insert at a time rather than all three together, so the bacterial colony on the others stays intact.
Goes well with
Pairs with your canister's mechanical foam and biological media stages when it's time for a full service, and with your regular water testing kit to confirm the bacterial colony is keeping up.
Warranty and delivery
As a genuine Fluval spare part, this item is covered by the consumer guarantees under Australian Consumer Law. Ships from Nick's Aquarium Oceanarium Terrarium, Brisbane / North Lakes QLD.
Common questions
Is this foam for mechanical or biological filtration?
Both. Fluval's Bio-Foam+ is designed to do mechanical filtration — catching fine particles — and biological filtration, by giving nitrifying bacteria a large surface area to colonise.
How often should I replace it?
Fluval recommends rinsing it in old tank water around every 3 months and replacing it around every 6 months.
Will this fit my Fluval 307 or 407?
No — the 306/406 and 307/407 canisters use a different, larger foam insert. This pack is sized for the 106, 206, 107 and 207 only.
Should I replace all three inserts at once?
You don't have to — staggering replacement, one at a time, avoids wiping out your whole bacterial colony in a single service.




