Bioscape 320L/h Hanging Filter Replacement Bio Balls (1 Pack)
Pack size
1 pack
Suits tanks
38–75 L
Water type
Freshwater + Marine
Fits
Bioscape Tropic "Easy Clean" 80 Hang-On Filter, 320L/h (BIS531)
Part no.
BIS531C
Media type
Bio balls
Bioscape 320L/h Hanging Filter Replacement Bio Balls (1 Pack)
Give your filter's bacteria more room to work. This is the biological-stage replacement media for the Bioscape Tropic "Easy Clean" 80 Hang-On Filter (320 L/h, model BIS531) – sold as a one-pack of bio balls that host the colony of beneficial bacteria breaking down fish waste.
Key features
- High surface area – the ridged ball shape gives beneficial bacteria far more area to colonise than a flat pad.
- Long service life – biological media isn't a consumable in the same way as foam or carbon; it keeps working for months.
- Drop-in fit – sized for the Easy Clean 80's cartridge slot, no cutting or trimming.
- Final stage – sits last in the filter's three-stage cascade, after the mechanical and chemical media.
Specifications
| Attribute | Detail |
|---|---|
| SKU | BIS531C |
| Barcode | 9327975057695 |
| Pack size | 1 pack |
| Media type | Bio balls (biological filtration) |
| Fits | Bioscape Tropic "Easy Clean" 80 Hang-On Filter, 320 L/h (BIS531), for aquariums of 38–75 L |
Which filter stage do I need?
The Easy Clean 80 runs water through three stages in the one cartridge housing. Replace whichever stage is due, rather than the whole set:
| Stage | Media | What it removes | Typical service life |
|---|---|---|---|
| 1 – Mechanical | Filter foam (BIS531A) | Suspended debris and floating particles | Rinse in tank water at each service; replace once it's compacting or breaking apart – as a general guide, every four to six weeks |
| 2 – Chemical | Carbon cartridge (BIS531B) | Odours, discolouration, dissolved organics | Replace on a schedule, not a rinse – as a general guide, every three to four weeks, once the carbon is saturated |
| 3 – Biological | Bio balls (BIS531C) | Ammonia and nitrite, via colonising bacteria | Long life – rinse gently in tank water only, replace solely if physically broken |
Suitable for, and not suitable for
Suitable for the Easy Clean 80 hang-on filter (320 L/h, BIS531) in freshwater or marine aquariums of 38–75 L. Not suitable for the 160 L/h or 450 L/h Easy Clean models, or Bioscape's other filter ranges – the cartridge housings differ in size.
Care and maintenance
Rinse gently in removed tank water when you service the filter – never under a tap, and never with soap or detergent, both of which will kill the bacteria colony living on the media. Only replace the balls if they're visibly cracked or crumbling; healthy bio media should be left in place as long as possible.
Goes well with
- Bioscape 320L/h Hanging Filter Replacement Carbon Cartridge (2 Pack) – the chemical stage that sits ahead of this media.
- Bioscape 320L/h Hanging Filter Replacement Foam (6 Pack) – the mechanical prefilter that protects this media from clogging.
Warranty and delivery
Covered by Bioscape's standard consumer guarantees under Australian Consumer Law, in addition to any manufacturer warranty. Ships standard parcel post.
Common questions
How often do I need to replace bio balls?
Rarely. Unlike foam or carbon, bio media isn't meant to be changed on a schedule – leave it in place and just rinse it in tank water at each service, replacing only if it physically breaks down.
Can I run the filter without bio balls?
You can, but you'll lose most of the biological filtration capacity – the foam and carbon stages don't host bacteria anywhere near as effectively.
Will this fit my other Bioscape filter?
Only the Easy Clean 80 (320 L/h, BIS531). The 160 L/h and 450 L/h Easy Clean models use differently sized cartridges.
Do I need to replace all the bio balls at once?
No – to avoid a bacterial crash, it's safer to replace bio media gradually rather than all in one go, and only when it's genuinely deteriorated.
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