Recirculating aquaculture systems from equipment design and manufacturing to equipment supply and installation at your fish farm or any land based aquaculture application.

Recirculating Aquaculture Systems


Aquaculture Equipment Manufacturer & Engineering Contractor

MAT-KULING is a Norwegian company partnered with MAT FILTRATION TECHNOLOGIES©. We are dedicated to provide RAS equipment supply and specialized MEP contracting services for the land based fish farming of sea and fresh water aquaculture farms. MAT-KULING is not focusing on building complete fish farms. On the contrary it aims to be subcontracted for the complete supply and installation for all MEP and RAS equipment of a fish farm or hatchery.

Learn More About MAT-KULING

Filtration Systems for Intensive Aquaculture Farms

We fabricate low energy consumption MEP equipment for biological filtration, mechanical filtration, and disinfection solutions in the aquaculture industry.

Recirculating Aquaculture Systems


Compete Recirculating Aquaculture System

RAS Skid Filtration Units

The system with the smallest footprint per biomass filtered. Fully integrated plug & play and tested RAS filtration technology. It covers mechanical, biological, chemical and disinfection filtration processes with low energy consumption and ease of operation.

Freshwater Protein Skimmer Aquaculture

Freshwater Protein Skimmers

Protein Skimmers for Salmon Hatcheries Freshwater fish farmers, especially salmon farmers, requested MAT-KULING to develop a Freshwater Protein Skimmer able to perform in fresh and brackish water conditions and installed in salmon pre-smolt stages tanks. The protein skimmer is an add-on to the existing filtration setup. By adding a protein skimmer to the hatchery filtration […]

Foam Fractionator Aquaculture

Protein Skimmers – Foam Fractionators

The Protein Skimmers made of PE & PP bodies come ready with Venturi pumps, automated protein foam level control, skimmer cap sludge autowash, control panel & ozone/oxygen intake. Assembled and hydrotested ready for installation.

RAS Engineering beyond your Expectations

Meet marine & freshwater biologists, hydraulic & aquaculture engineers constantly designing new equipment simple in operation that deliver optimum water quality.

Recirculating Aquaculture Systems for Fish Farms

Salmonid RAS Filtration Technology

While everyone in our industry knows that it’s almost impossible to achieve high density foam when operating in fresh water systems, MAT-KULING has been working for over 15 months to design and trial a properly functioning Freshwater Protein Skimmer for Salmon Fish Farms. In the same time, the industry was lacking a system that would efficiently remove slime, residual, proteins from the dense pre smolt salmon tanks at RAS farms.

We at MAT-KULING conceived this problem as an opportunity and for over a year we have been performing trials on different viscosity and bioload fresh water systems aiming to achieve the thickest protein foam. The Freshwater Protein Skimmers are sufficient and capable to remove high volume of protein slime from pre smolt salmon tanks. The new mega protein fractionators are built taking into account the average volume of the pre smolt tanks.

Freshwater RAS Technology

Freshwater Protein Skimmers

Fresh Water Protein Skimmers are sufficient and capable to remove high volume of protein slime from pre-smolt salmon tanks and Salmonid land based aquaculture.

All Freshwater Protein Skimmers
Salmon fry Tanks Powered by freshwater RAS technology


Advanced RAS for the Ferme Piscicole des Bobines Trout Farm
RAS Technology & Equipment for Les Bobines Rainbow Trout Fish Farm

Advanced RAS for the Ferme Piscicole des Bobines Trout Farm

The latest MAT-KULING technology and equipment at Ferme Piscicole des Bobines land based trout fish farm, recycles and filters rearing water, while ensuring compliance with the highest environmental standards.

View Project Advanced RAS for the Ferme Piscicole des Bobines Trout Farm
Land Based Salmon Farming RAS
Land Based Salmon Fish Farm - Swiss Lachs

Land Based Salmon Farming RAS

Intensive salmon farming under strict disinfection protocols requires the most updated RAS technology. MAT designs delivers and install the RAS infrastructure of Swiss Lachs.

View Project Land Based Salmon Farming RAS