GRP Access Structures for Barcaldine Hatchery

Dura Composites designed and supplied a challenging set of two GRP (glass reinforced polymer) access structures for Barcaldine Hatchery – one at the Vacuum Waste and the other at the On-Growing RAS – each addressing critical safety and access needs for sensor maintenance and cleaning. The access structures were required to maintain adequate headroom, using…

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Fit for an emperor

Pike perch

A RAS farm in Germany has been leading the way in raising pike-perch for the table at a commercial scale. Robert Outram reports Mark Saalmann has some advice for any aquaculturist looking to start farming a new species. As he explains: “Every fish is different. You can’t build a trout farm for a pike-perch.” Saalmann…

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From problem to product

polychaete worm

Sludge from fish farms and hatcheries is seen as waste, but it also contains potentially valuable resources One of the advantages of fish farming with a recirculating aquaculture system (RAS) is that waste – in its various forms – can be collected rather than ending up in the ocean. The bad news is that it…

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Study shows how nitrates in RAS systems affect fish health

Turbot, scophthalmus maximus, Adult swimming

Exposure to nitrates can adversely affect the intestinal health of fish in RAS systems, a study by researchers in China has found. While it is well known that nitrates have a toxic effect, the study provides a detailed analysis of how nitrate (NO3) levels can have an impact at molecular level. A team of scientists…

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Effective and sustainable wastewater treatment in Aquaculture NAPRAS

napras project alumichem

Alumichem, along with partners, has secured a Green Development and Demonstration Programme grant for the NAPRAS fish farming wastewater treatment project Collaborating with DTU Aqua, Clean Matter and Drying Matter, the NAPRAS initiative aims to revolutionise wastewater treatment in recirculating aquaculture systems (RAS). The project focuses on efficient nitrogen (N) and phosphorous (P) removal, aiming…

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AquaBounty set to sell Indiana RAS farm

North American land-based salmon farmer AquaBounty Technologies is putting its Indiana site on the market in an effort to raise funds and strengthen its balance sheet. In a stock market announcement yesterday, CEO Sylvia Wulf said: “We have been focused on securing funding for our near and long-term needs, so we can continue to pursue…

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Gigante takes big step towards production

Norwegian land-based fish farmer Gigante Salmon has reached a major milestone for its new plant, with the farm’s nursery pool now filled with sea water. The company is building one of Norway’s most advanced RAS (recirculating aquaculture system) facilities, on the island of Lille Indre Rosøya in Rødøy, and flooding the nursery pool is an…

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RAS firms projects close to volcanic eruption threat area

At least three Icelandic fish farming companies will be keeping a watchful eye on the south west of the country today where the risk of a major volcanic eruption loomed large at the weekend. The harbour town of Grindavik saw the evacuation of its 3,500 inhabitants on Saturday, after the government declared a state of…

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Proximar seeking extra £12m due to cost inflation

Proximar Seafoods, the company behind the Mount Fuji RAS salmon farm project in Japan, has said it needs to raise more money due to rising construction costs. It is looking for an extra NOK 165 million (around £12m). Proximar said the project’s total capital expenditure (capex) has been updated to NOK 1,240 million (£92m), up…

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blutanQ stars in Norway

Balmoral Tanks’ blutanQ® RAS tank technology was heavily featured on the company’s stand at the recent Aqua Nor exhibition in Trondheim, Norway. Jonathan Smith, Sales Director, said: “The show presented an excellent opportunity for us to demonstrate the many advantages of blutanQ. It seems as though the industry is delighted with the product as well…

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