Visualisation of the walkway between the circular rearing tanks inside the Castell Salmon hall

Inside the rearing hall (visualisation)

Technology

Introducing state-of-the-art, sustainable aquaculture technology to Bavaria.

Advancing sustainable aquaculture through innovative
Recirculation Aquaculture System (RAS) Technology

Our farm will be modernised by utilising cutting-edge recirculation technology. This will enable us to farm and process Atlantic salmon sustainably and locally while minimising the negative environmental impact of farming. Additionally, our facility will ensure our fish are healthy, free from antibiotics and raised without exposure to ocean microplastics, and fully traceable in production and waste emissions. Growing our fish regionally means a far shorter journey from harvest to plate, which means longer shelf life and better quality for our customers.

Cutaway visualisation of the RAS2020 module with its circular rearing tanks

Innovative Recirculation Systems

Castell Salmon will use a flexible, module-based recirculating aquaculture system (RAS) optimised for salmon farming. Our system will ensure stable water parameters, which optimise growth, reduce the feed conversion ratio (FCR), and enhance survival rates. It will maintain a controlled environment through advanced recirculation technology.

RAS2020 module (visualisation)
The main spring at Griestal that supplies the farm

Sustainable Energy Use

Leveraging the latest advancements, the third generation of the RAS2020 will optimise water, electricity and oxygen consumption. Coupled with our spring water supply used as cooling water, our system will exemplify energy efficiency in aquaculture.

Our main spring at Griestal, which supplies the farm with naturally cool water
Visualisation of a row of drum filters in the water treatment gallery

Water Treatment and Quality Control

Our state-of-the-art water treatment will use drum filters and Moving Bed Biofilm Reactor (MBBR) technology, ensuring the highest water quality by removing harmful substances and optimising oxygen levels. This will create a healthy growing environment for our salmon and significantly reduce water usage.

Drum filtration and MBBR treatment (visualisation)
Overhead feed pipework and stainless steel feed hoppers above circular rearing tanks in an indoor fish farm hall

Feed Management System

Our centralised feeding system will integrate data with RAS water quality management. This predictive tool will allow proactive interventions to optimise feed conversion ratios and growth performances, significantly enhancing resource efficiency.

Automated feed distribution (visualisation)
Visualisation of the grow-out hall with large circular tanks and walkways

Dynamic Tank Design

The grow-out module will feature adjustable water velocity and movable grids within two main circular tanks, providing optimal conditions across all stages of salmon growth. This design will minimise stress and maximise fish welfare, producing high-quality, healthy salmon.

The grow-out hall (visualisation)
Atlantic salmon swimming calmly in clear green tinted water in an indoor rearing tank

Biosecurity and Fish Welfare

Castell Salmon will prioritise biosecurity and fish welfare with minimal human interaction, without antibiotics or pesticides. Our RAS systems are designed to reduce disease risk and stress, ensuring the health and quality of our fish from egg to harvest.

Atlantic salmon in a rearing tank (visualisation)
Visualisation of the filtration and oxygenation gallery with treatment units

Advanced Filtration and Oxygenation

Our facilities will be equipped with cutting-edge filtration and oxygenation technologies, including ozonated protein skimming and CO2 degassing. These processes will ensure the removal of excess bacteria and maintain ideal oxygen levels throughout our tanks.

Filtration and oxygenation gallery (visualisation)
Modern aquaculture control room with wall mounted screens showing process diagrams and water quality readouts

Integrated Control Systems

Our operation will be overseen by a sophisticated SCADA system, enabling precise control over environmental conditions such as pH, temperature, and water quality and enhancing the safety and efficiency of our farm.

The control room (visualisation)
Plan view visualisation of the circular tank layout inside the rearing hall

Technology-Enhanced Fish Welfare

Our operation will prioritise our salmon's physiological and biological needs with designs that prevent early maturation and stress. Continuous evaluation and risk management practices will be employed to maintain high fish welfare standards.

Circular tank layout (visualisation)
Visualisation of the waste water treatment plant buildings and tanks

Sustainable Waste Management and Environmental Protection

Our facility will feature an advanced Waste Water Treatment Plant (WWTP) with sludge dewatering and sophisticated MBBR systems, efficiently treating and reducing nitrogen and organic matter. Incorporating sustainable practices, we will ensure all by-products are managed responsibly and dramatically lower the environmental impact of our operations, aligning with global sustainability standards.

Waste water treatment plant (visualisation)

Why it matters

The technology is only worth building if it protects the water, the fish and the landscape around the farm. See what that means in practice.

OUR SUSTAINABILITY