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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

In the first year of operation the Varvarynsky Fish Farming Facility is projected to produce 15 metric tonnes of black caviar, 112 metric tonnes of scaly fish (carp), 200 metric tonnes of sturgeon and 28 million sturgeon fry. more

May 30, 2017 11:18 AM Recirc

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

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