Very high specific surface
From 500–800 m²/m³ wheel carriers up to >5,500 m²/m³ structured chips — more nitrifying bacteria per cubic metre of reactor.
Filter Media
The home for your nitrifying bacteria — high-surface-area filter media (MBBR K1/K3/K5 bio media, bio balls, ceramic rings) that give beneficial bacteria a massive protected surface to colonise, turning toxic ammonia into nitrate inside your biofilter, moving-bed reactor or trickling filter. Made from 100% virgin HDPE, freshwater- and seawater-safe.
- Surface area500 – >5,500 m²/m³
- FormatsK1/K3/K5 · bio balls · ceramic rings
- Material100% virgin HDPE / sintered ceramic
- WaterFresh & saltwater
ISO 9001 CE OEM / ODM
15+ years in aquaculture engineering · Trusted by Japfa Group, Japan Nissui & Tropo Farms · Shipped worldwide in one container
Product Description
the biochemical ball is the use of advanced non-toxic plastic PP artificial processed into bio-filter balls porous structure, multi-sheet structure, mesh structure inside the porous adsorption nitrifying bacteria and settings, highly conducive to oxidation the role of oxygen in the convection exchange, but also for the denitrifying bacteria, breeding provides a huge surface area of biochemical growth.
Advantage:
- The sewage treatment plant aerates oxygenation and agitation to prevent sedimentation of large particles and remove some organic matter.
- aquarium (aquaculture farm) to the environment of eutrophic water body oxygenation, the biological culture of oxygen.
- live fish and seafood transport oxygen.
- aquarium (purifier) purification, filtration, water ozone sterilization, and aeration.
- Other process uses require diffusion of air.
Package and Shipment
Specifications
Models & configuration
Sizes and surface areas reflect standard industry grades — final specifications are confirmed by SIGMA's production line per order.
| Model | Capacity | Typical use | Core configuration |
|---|---|---|---|
| SIGMA-K1 | |||
| SIGMA-K3 | |||
| SIGMA-K5 | |||
| SIGMA-CHIP | |||
| SIGMA-BALL | |||
| SIGMA-RING |
| Material | 100% virgin HDPE / PP (floating types) · sintered ceramic (ring types) |
|---|---|
| Specific surface area | 500–800 m²/m³ (wheel types) up to >5,500 m²/m³ (structured chip types) |
| Filter compatibility | Moving-bed MBBR / fluidized bed (K1/K3/K5) · fixed bed, trickling tower and pond filters (bio balls, ceramic rings) |
| Water type | Freshwater / saltwater |
| Packing | By m³ / ton / bag (bulk bags) |
| Options | Different K grades, pre-seeded / pre-matured media, media retention screens |
System composition
Every format covered
K1/K3/K5 MBBR media for moving beds plus bio balls and ceramic rings for fixed-bed and trickling filters.
Virgin HDPE, durable and reusable
Chemically stable in fresh and salt water, with a long service life.
Self-cleaning in a moving bed
Constant tumbling keeps the biofilm thin and active for stable nitrification.
Selected to your load
Format and surface area matched to the biofilter type and the farm's ammonia load.
Mature supply chain
Shared with the water-treatment industry — stable pricing at volume.
Application
- Filling RAS biofilters, MBBR reactors and fluidized beds — the core consumable of biological filtration
- Trickling towers, submerged bio chambers and fixed beds ahead of pumps
- Koi-pond and aquarium biological filtration
- Biological stage of wastewater and industrial water treatment
Video
Filter Media
FAQ
Frequently asked questions
What is aquaculture filter media for?
High-surface-area media give nitrifying bacteria a large protected surface to colonise, forming a biofilm that converts toxic ammonia and nitrite into far less harmful nitrate inside your biofilter, moving-bed reactor or trickling filter.
What is the difference between MBBR media and bio balls?
MBBR media (K1/K3/K5) are small floating HDPE carriers that tumble freely in a moving-bed reactor, keeping the biofilm thin and active. Bio balls and ceramic bio rings are fixed-bed media for trickling filters, sumps and pond filters.
How much surface area does the media provide?
Protected surface area is typically 500–800 m²/m³ for wheel types, up to >5,500 m²/m³ for chip/structured types.
What is the filter media made of?
Media are made from 100% virgin HDPE (or sintered ceramic for ring types), chemically stable, durable, reusable, and work in both fresh and sea water.
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View details →Request a tailored quote
Tell us your species, target density and site — our engineers size the system and reply within one business day.
Filter Media Request a Quote