Browse all press releases, news articles, and insights from Pure Salmon Technology.
16 results
Insights
The problem Technology does not replace competence. A modern RAS facility is a complex workplace where fish biology, water treatment, automation and daily operation must work together. Without trained operators, even a well-designed system can become difficult to manage. What happens in practice Operational problems often develop when alarms are misunderstood, routines are inconsistent, or […]
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Water use in RAS is often described as low. In practice, it is constrained by biology, regulation and system design. Current situationSeveral facilities report limitations in freshwater availability. At the same time, regulatory pressure and control of water use are increasing. Typical water use in RAS ranges between 300–600 litres per kg feed. What drives […]
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Fish handling introduces rapid changes in pressure and water conditions. This increases the risk of gas-related stress and disease. What is gas bubble diseaseGas bubble disease occurs when dissolved gases come out of solution inside the fish.This happens when water is supersaturated, typically when TGP exceeds 100%.Gas forms bubbles in tissue and blood, affecting gills, […]
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Control, not complexity The problemRAS facilities are complex, but daily operation must be manageable. What happens in practiceOperators handle large amounts of data and multiple systems. Lack of overview increases risk and workload. What mattersOperators need clear information, early warnings and systems that support decisions. How we approach itWe design control systems that provide overview, […]
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What happens when recirculation approaches 100 percent The problemReducing water use increases system efficiency, but also increases complexity. What happens in practiceCompounds accumulate in the system over time. Without proper removal, they can reach harmful levels. What mattersLow water use requires control of more than particles and gases. Nutrients, metals and trace compounds must also […]
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The problem Operational safety is a core requirement in RAS. A facility may be technically advanced, but if the design does not support stable operation, maintenance and system recovery, the risk of downtime, water quality issues and fish losses increases. What happens in practice Small design weaknesses can create larger operational problems over time. Poor […]
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The problem Production-related disorders in RAS are not always caused by pathogens. In many cases, fish are affected by the conditions they are exposed to over time, including water quality, system design, operational routines and production intensity. What happens in practice Small deviations in CO₂, particles, flow, density, feeding or handling can develop into welfare […]
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Oxygen cone Tjuin Salmar a facility made by Pure Salmon Technology
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Microplastics in RAS originate from multiple sources within the system. The main contributors are linked to materials and operational wear. Primary sourcesMicroplastics can come from: Wear on biofilter media has been observed, although it is not clear whether all systems contribute equally. System factorsFragmentation is influenced by: Older systems may have higher risk of material […]
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Energy consumption is a major cost driver in RAS. It varies significantly between facilities and depends on both design and operation. Typical consumptionReported energy use ranges from 3 to 10 kWh per kg fish, depending on system and production stage. Energy demand is expected to increase as more facilities are developed. Where energy is usedKey […]
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Why daily operation defines performance Fish welfare is closely linked to how a RAS facility is operated. Stable conditions are more important than theoretical performance. Welfare as a system outcomeFish welfare depends on multiple factors working together: These cannot be managed in isolation. Operational impactSmall deviations in water quality or system performance can quickly affect […]
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Gas balance in water is a critical factor in RAS operation. Small deviations can affect fish health and system stability. What gases in water meanGases such as oxygen, nitrogen and carbon dioxide are dissolved in water. The amount depends on temperature, pressure and salinity. Water and air are constantly exchanging gases, but in RAS systems […]
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What it takes to improve performance in running facilities The problemMany RAS facilities are designed for specific conditions, but over time production demands change. Existing systems are pushed beyond their original capacity, often without corresponding upgrades. What happens in practiceOperators experience unstable temperatures, reduced efficiency or limited capacity in parts of the system. Changes are […]
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If conditions are not right, the system has failed The problemFish welfare is often treated as something that is monitored, not something that is designed. What happens in practiceWater quality, flow, handling and system stability directly affect fish health and development. What mattersFish are part of a controlled environment. Their physiological limits must define how […]
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The problemWater treatment in RAS depends on biological processes that must remain stable over time. What happens in practiceMicrobial activity is high throughout the system, not only in the bioreactors. Instability can lead to poor water quality and reduced fish health. What mattersOperators are managing an ecosystem. Stable nitrification and microbial balance are critical for […]
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The problem Biosecurity in RAS is more than disinfection. Pathogens can enter the facility through fish, water, people, equipment and daily operations. If biosecurity is not supported by the system design, even good routines become difficult to maintain consistently. What happens in practice Biosecurity risks often develop through small weaknesses in layout or operation. Poor […]
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