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How climate change is affecting RAS in hatcheries

At first glance, the move to closed systems appears to be a defensive position, but it’s actually worked very much in the favour of the sectors that have made the switch.

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Features

Three years ago, Marine Harvest Canada began expanding two of its BC hatcheries by building scaled-up versions of its best performing RAS, growing more fish using less freshwater. more

May 22, 2017 11:28 AM Recirc

The survival rate of walleye larvae in RAS increases when micro-diffusers and oil absorbent socks are used, according to study. more

Mar 22, 2017 2:32 PM Recirc

Dr Dallas Weaver and colleagues have built, tested and installed a denitrification system geared to service multiple RAS systems while maintaining biosecurity. more

Mar 2, 2017 2:34 PM Recirc

Cavitation occurs when NPSHr (Net Positive Suction Head Required) is greater than NPSHAa (Net Positive Suction Head Available). A simple method to determine NPSHa is to install a vacuum gauge near the pump suction. more

Nov 3, 2016 10:13 AM Recirc

In a joint venture, SalmoBreed and Salten Stamfisk are creating a 100 million ova-a-year unit. more

Nov 3, 2016 9:59 AM Recirc

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