The Mid-Norwegian Ring (MNR) improves the water environment in cages by transporting water upwards.

Download our Mid-Norwegian datasheet here.

Download our Mid-Norwegian user manual here.


How it works

  1. Pressurized air is transported to an aerator in the lower part of the cage.
  2. Bubbles is distibuted in an aerator.
  3. The bubbles drag water upwards.
  4. The water in the cage is exchanged.


You can read more about SalMar and Midt-Norsk havbruk’s experiences on


NorseAqua supplies ready to use solutions


MNRSystemtegning 1

Major components:

  • Compressors
  • Flowcontrol module
  • Aerators
  • Piping.

The solution is continously improved in collaboration with our customers.


See our products.

See our products


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