Coldwater marine tank in Norway

by Owen James

This coldwater marine tank sees different seaweeds rise and fall with the seasons

This coldwater marine tank sees different seaweeds rise and fall with the seasons

Many European and North American reefers dream of being able to catch fish for our own aquariums. But how many have tried keeping the creatures to be found around our native shores?

Jon Olavs is one person who hasn’t forgotten the fun of dipping a net in a rock pool. His native marine tank features macro algae and other fish and animals that he collects off the coast of Norway:

I am located in Bergen on the west coast of Norway. The Gulf Stream, originating in the Gulf of Mexico, passes by the coast here after having crossed the North Atlantic. It brings warm water, changing the climate of this region from sub-Arctic to temperate. It also causes an upwelling that makes the ocean nutrient-rich. The result is a very fascinating underwater environment.

Jon documents his experiences in his coldwater marine blog in English. (Norwegian readers will find plenty more on fishkeeping in their own tongue, too).

Be warned if you’re inspired into doing the same. Large coldwater marine tanks don’t keep cheap:

  • Tank: 1000-liters. Self-built composite with glass only in front.
  • Sump: 100-liters
  • Skimmer: Deltec APF600
  • Light: 6×54W T5 tubes
  • Chiller: AquaMedic Titan 1500, 375-watts
  • Return pump: AquaMedic OR3500
  • Six internal powerheads with wave motion
  • Refugium: 100-liters
  • DIY CO2 system
  • Total price: 40,000 NOK (US$6,150)

Jon has since added even more technology, including an ozoniser. The big difficulty with native marine tanks though is keeping the water cool, as evidenced by the system’s 375-watt AquaMedic chiller.

There are plenty of cool creatures that make such an aquarium worthwhile, though. Below are a few of the hundreds of pics Jon has posted of his coldwater marine tank.

(For more, head over to his excellent native marine blog).

This pipefish hunts for microfauna among the 1000-liter tank's weed and rocks

This pipefish hunts for microfauna among the 1000-liter tank's weed and rocks

There are numerous pretty coldwater goby species around the world

There are numerous pretty coldwater goby species around the world

Plankton hunting equipment ready for action!

Plankton hunting equipment ready for action!

Like them or loathe them, hermit crabs have a place in coldwater ecosystems, too

Love them or loathe them, hermit crabs have a place in coldwater ecosystems, too

Read the Ultimate Secrets To Saltwater Fish And Invertebrates.

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{ 1 comment… read it below or add one }

maba 08.17.10 at 7:56 am

previously I apologize about my english not very good,

This blog is good, i get many information about cold water tank,
next I want to find information about deepwater and marine technology.

thanks
regards

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